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type="radio" value="hide"> <label for="abstracts-1">Hide abstracts</label></li></ul> </div> <div class="box field is-grouped is-grouped-multiline level-item"> <div class="control"> <span class="select is-small"> <select id="size" name="size"><option value="25">25</option><option selected value="50">50</option><option value="100">100</option><option value="200">200</option></select> </span> <label for="size">results per page</label>. </div> <div class="control"> <label for="order">Sort results by</label> <span class="select is-small"> <select id="order" name="order"><option selected value="-announced_date_first">Announcement date (newest first)</option><option value="announced_date_first">Announcement date (oldest first)</option><option value="-submitted_date">Submission date (newest first)</option><option value="submitted_date">Submission date (oldest first)</option><option value="">Relevance</option></select> </span> </div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2502.08895">arXiv:2502.08895</a> <span> [<a href="https://arxiv.org/pdf/2502.08895">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> </div> </div> <p class="title is-5 mathjax"> Anisotropic Strain Relaxation-Induced Directional Ultrafast Carrier Dynamics in RuO2 Films </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Jeong%2C+S+G">S. G. Jeong</a>, <a href="/search/cond-mat?searchtype=author&query=Choi%2C+I+H">I. H. Choi</a>, <a href="/search/cond-mat?searchtype=author&query=Lee%2C+S">S. Lee</a>, <a href="/search/cond-mat?searchtype=author&query=Oh%2C+J+Y">J. Y. Oh</a>, <a href="/search/cond-mat?searchtype=author&query=Nair%2C+S">S. Nair</a>, <a href="/search/cond-mat?searchtype=author&query=Lee%2C+J+H">J. H. Lee</a>, <a href="/search/cond-mat?searchtype=author&query=Kim%2C+C">C. Kim</a>, <a href="/search/cond-mat?searchtype=author&query=Seo%2C+A">A. Seo</a>, <a href="/search/cond-mat?searchtype=author&query=Choi%2C+W+S">W. S. Choi</a>, <a href="/search/cond-mat?searchtype=author&query=Low%2C+T">T. Low</a>, <a href="/search/cond-mat?searchtype=author&query=Lee%2C+J+S">J. S. Lee</a>, <a href="/search/cond-mat?searchtype=author&query=Jalan%2C+B">B. Jalan</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2502.08895v1-abstract-short" style="display: inline;"> Ultrafast light-matter interactions inspire potential functionalities in picosecond optoelectronic applications. However, achieving directional carrier dynamics in metals remains challenging due to strong carrier scattering within a multiband environment, typically expected to isotropic carrier relaxation. In this study, we demonstrate epitaxial RuO2/TiO2 (110) heterostructures grown by hybrid mol… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.08895v1-abstract-full').style.display = 'inline'; document.getElementById('2502.08895v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.08895v1-abstract-full" style="display: none;"> Ultrafast light-matter interactions inspire potential functionalities in picosecond optoelectronic applications. However, achieving directional carrier dynamics in metals remains challenging due to strong carrier scattering within a multiband environment, typically expected to isotropic carrier relaxation. In this study, we demonstrate epitaxial RuO2/TiO2 (110) heterostructures grown by hybrid molecular beam epitaxy to engineer polarization-selectivity of ultrafast light-matter interactions via anisotropic strain engineering. Combining spectroscopic ellipsometry, X-ray absorption spectroscopy, and optical pump-probe spectroscopy, we revealed the strong anisotropic transient optoelectronic response of strain-engineered RuO2/TiO2 (110) heterostructures along both in-plane [001] and [1-10] crystallographic directions. Theoretical analysis identifies strain-induced modifications in band nesting as the underlying mechanism for enhanced anisotropic carrier relaxation. These findings establish epitaxial strain engineering as a powerful tool for tuning anisotropic optoelectronic responses in metallic systems, paving the way for next-generation polarization-sensitive ultrafast optoelectronic devices. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.08895v1-abstract-full').style.display = 'none'; document.getElementById('2502.08895v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2025. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">18 pages</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2501.11204">arXiv:2501.11204</a> <span> [<a href="https://arxiv.org/pdf/2501.11204">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> </div> </div> <p class="title is-5 mathjax"> Metallicity and Anomalous Hall Effect in Epitaxially-Strained, Atomically-thin RuO2 Films </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Jeong%2C+S+G">Seung Gyo Jeong</a>, <a href="/search/cond-mat?searchtype=author&query=Lee%2C+S">Seungjun Lee</a>, <a href="/search/cond-mat?searchtype=author&query=Lin%2C+B">Bonnie Lin</a>, <a href="/search/cond-mat?searchtype=author&query=Yang%2C+Z">Zhifei Yang</a>, <a href="/search/cond-mat?searchtype=author&query=Choi%2C+I+H">In Hyeok Choi</a>, <a href="/search/cond-mat?searchtype=author&query=Oh%2C+J+Y">Jin Young Oh</a>, <a href="/search/cond-mat?searchtype=author&query=Song%2C+S">Sehwan Song</a>, <a href="/search/cond-mat?searchtype=author&query=Lee%2C+S+w">Seung wook Lee</a>, <a href="/search/cond-mat?searchtype=author&query=Nair%2C+S">Sreejith Nair</a>, <a href="/search/cond-mat?searchtype=author&query=Choudhary%2C+R">Rashmi Choudhary</a>, <a href="/search/cond-mat?searchtype=author&query=Parikh%2C+J">Juhi Parikh</a>, <a href="/search/cond-mat?searchtype=author&query=Park%2C+S">Sungkyun Park</a>, <a href="/search/cond-mat?searchtype=author&query=Choi%2C+W+S">Woo Seok Choi</a>, <a href="/search/cond-mat?searchtype=author&query=Lee%2C+J+S">Jong Seok Lee</a>, <a href="/search/cond-mat?searchtype=author&query=LeBeau%2C+J+M">James M. LeBeau</a>, <a href="/search/cond-mat?searchtype=author&query=Low%2C+T">Tony Low</a>, <a href="/search/cond-mat?searchtype=author&query=Jalan%2C+B">Bharat Jalan</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2501.11204v1-abstract-short" style="display: inline;"> The anomalous Hall effect (AHE), a hallmark of time-reversal symmetry breaking, has been reported in rutile RuO2, a debated metallic altermagnetic candidate. Previously, AHE in RuO2 was observed only in strain-relaxed thick films under extremely high magnetic fields (~50 T). Yet, in ultrathin strained films with distinctive anisotropic electronic structures, there are no reports, likely due to dis… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.11204v1-abstract-full').style.display = 'inline'; document.getElementById('2501.11204v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.11204v1-abstract-full" style="display: none;"> The anomalous Hall effect (AHE), a hallmark of time-reversal symmetry breaking, has been reported in rutile RuO2, a debated metallic altermagnetic candidate. Previously, AHE in RuO2 was observed only in strain-relaxed thick films under extremely high magnetic fields (~50 T). Yet, in ultrathin strained films with distinctive anisotropic electronic structures, there are no reports, likely due to disorder and defects suppressing metallicity thus hindering its detection. Here, we demonstrate that ultrathin, fully-strained 2 nm TiO2/t nm RuO2/TiO2 (110) heterostructures, grown by hybrid molecular beam epitaxy, retain metallicity and exhibit a sizeable AHE at a significantly lower magnetic field (< 9 T). Density functional theory calculations reveal that epitaxial strain stabilizes a non-compensated magnetic ground state and reconfigures magnetic ordering in RuO2 (110) thin films. These findings establish ultrathin RuO2 as a platform for strain-engineered magnetism and underscore the transformative potential of epitaxial design in advancing spintronic technologies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.11204v1-abstract-full').style.display = 'none'; document.getElementById('2501.11204v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">23 pages</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.03231">arXiv:2407.03231</a> <span> [<a href="https://arxiv.org/pdf/2407.03231">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Strongly Correlated Electrons">cond-mat.str-el</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1021/acs.nanolett.4c01536">10.1021/acs.nanolett.4c01536 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Dimensionality Engineering of Magnetic Anisotropy from Anomalous Hall Effect in Synthetic SrRuO3 Crystals </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Jeong%2C+S+G">Seung Gyo Jeong</a>, <a href="/search/cond-mat?searchtype=author&query=Cho%2C+S+W">Seong Won Cho</a>, <a href="/search/cond-mat?searchtype=author&query=Song%2C+S">Sehwan Song</a>, <a href="/search/cond-mat?searchtype=author&query=Oh%2C+J+Y">Jin Young Oh</a>, <a href="/search/cond-mat?searchtype=author&query=Jeong%2C+D+G">Do Gyeom Jeong</a>, <a href="/search/cond-mat?searchtype=author&query=Han%2C+G">Gyeongtak Han</a>, <a href="/search/cond-mat?searchtype=author&query=Jeong%2C+H+Y">Hu Young Jeong</a>, <a href="/search/cond-mat?searchtype=author&query=Mohamed%2C+A+Y">Ahmed Yousef Mohamed</a>, <a href="/search/cond-mat?searchtype=author&query=Noh%2C+W">Woo-suk Noh</a>, <a href="/search/cond-mat?searchtype=author&query=Park%2C+S">Sungkyun Park</a>, <a href="/search/cond-mat?searchtype=author&query=Lee%2C+J+S">Jong Seok Lee</a>, <a href="/search/cond-mat?searchtype=author&query=Lee%2C+S">Suyoun Lee</a>, <a href="/search/cond-mat?searchtype=author&query=Kim%2C+Y">Young-Min Kim</a>, <a href="/search/cond-mat?searchtype=author&query=Cho%2C+D">Deok-Yong Cho</a>, <a href="/search/cond-mat?searchtype=author&query=Choi%2C+W+S">Woo Seok Choi</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2407.03231v1-abstract-short" style="display: inline;"> Magnetic anisotropy in atomically thin correlated heterostructures is essential for exploring quantum magnetic phases for next-generation spintronics. Whereas previous studies have mostly focused on van der Waals systems, here, we investigate the impact of dimensionality of epitaxially-grown correlated oxides down to the monolayer limit on structural, magnetic, and orbital anisotropies. By designi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.03231v1-abstract-full').style.display = 'inline'; document.getElementById('2407.03231v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.03231v1-abstract-full" style="display: none;"> Magnetic anisotropy in atomically thin correlated heterostructures is essential for exploring quantum magnetic phases for next-generation spintronics. Whereas previous studies have mostly focused on van der Waals systems, here, we investigate the impact of dimensionality of epitaxially-grown correlated oxides down to the monolayer limit on structural, magnetic, and orbital anisotropies. By designing oxide superlattices with a correlated ferromagnetic SrRuO3 and nonmagnetic SrTiO3 layers, we observed modulated ferromagnetic behavior with the change of the SrRuO3 thickness. Especially, for three-unit-cell-thick layers, we observe a significant 1,500% improvement of coercive field in the anomalous Hall effect, which cannot be solely attributed to the dimensional crossover in ferromagnetism. The atomic-scale heterostructures further reveal the systematic modulation of anisotropy for the lattice structure and orbital hybridization, explaining the enhanced magnetic anisotropy. Our findings provide valuable insights into engineering the anisotropic hybridization of synthetic magnetic crystals, offering a tunable spin order for various applications. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.03231v1-abstract-full').style.display = 'none'; document.getElementById('2407.03231v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">23 pages</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> published 2024 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.05838">arXiv:2405.05838</a> <span> [<a href="https://arxiv.org/pdf/2405.05838">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Other Condensed Matter">cond-mat.other</span> </div> </div> <p class="title is-5 mathjax"> Altermagnetic Polar Metallic phase in Ultra-Thin Epitaxially-Strained RuO2 Films </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Jeong%2C+S+G">Seung Gyo Jeong</a>, <a href="/search/cond-mat?searchtype=author&query=Choi%2C+I+H">In Hyeok Choi</a>, <a href="/search/cond-mat?searchtype=author&query=Nair%2C+S">Sreejith Nair</a>, <a href="/search/cond-mat?searchtype=author&query=Buiarelli%2C+L">Luca Buiarelli</a>, <a href="/search/cond-mat?searchtype=author&query=Pourbahari%2C+B">Bita Pourbahari</a>, <a href="/search/cond-mat?searchtype=author&query=Oh%2C+J+Y">Jin Young Oh</a>, <a href="/search/cond-mat?searchtype=author&query=Bassim%2C+N">Nabil Bassim</a>, <a href="/search/cond-mat?searchtype=author&query=Hirai%2C+D">Daigorou Hirai</a>, <a href="/search/cond-mat?searchtype=author&query=Seo%2C+A">Ambrose Seo</a>, <a href="/search/cond-mat?searchtype=author&query=Choi%2C+W+S">Woo Seok Choi</a>, <a href="/search/cond-mat?searchtype=author&query=Fernandes%2C+R+M">Rafael M. Fernandes</a>, <a href="/search/cond-mat?searchtype=author&query=Birol%2C+T">Turan Birol</a>, <a href="/search/cond-mat?searchtype=author&query=Zhao%2C+L">Liuyan Zhao</a>, <a href="/search/cond-mat?searchtype=author&query=Lee%2C+J+S">Jong Seok Lee</a>, <a href="/search/cond-mat?searchtype=author&query=Jalan%2C+B">Bharat Jalan</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2405.05838v2-abstract-short" style="display: inline;"> Altermagnetism refers to a wide class of magnetic orders featuring magnetic sublattices with opposite spins related by rotational symmetries, resulting in non-trivial spin splitting and magnetic multipoles. However, the direct observation of the altermagnetic order parameter remains elusive. Here, by combining theoretical analysis, electrical transport, X-ray and optical spectroscopies, we establi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.05838v2-abstract-full').style.display = 'inline'; document.getElementById('2405.05838v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.05838v2-abstract-full" style="display: none;"> Altermagnetism refers to a wide class of magnetic orders featuring magnetic sublattices with opposite spins related by rotational symmetries, resulting in non-trivial spin splitting and magnetic multipoles. However, the direct observation of the altermagnetic order parameter remains elusive. Here, by combining theoretical analysis, electrical transport, X-ray and optical spectroscopies, we establish a phase diagram in hybrid molecular beam epitaxy-grown RuO2/TiO2 (110) films, mapping symmetries along with altermagnetic/electronic/structural phase transitions as functions of film thickness and temperature. This features a novel altermagnetic metallic polar phase in epitaxially-strained 2 nm films, extending the concept of multiferroicity to altermagnets. Such a clear signature of a magnetic phase transition at ~500 K is observed exclusively in ultrathin strained films, unlike in bulk RuO2 single crystals. These results demonstrate the potential of epitaxial heterostructure design to induce altermagnetism, paving the way for emergent novel phases with multifunctional properties. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.05838v2-abstract-full').style.display = 'none'; document.getElementById('2405.05838v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">23 pages</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2312.16748">arXiv:2312.16748</a> <span> [<a href="https://arxiv.org/pdf/2312.16748">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Strongly Correlated Electrons">cond-mat.str-el</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1002/adfm.202301770">10.1002/adfm.202301770 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Correlated Quantum Phenomena of Spin-Orbit Coupled Perovskite Oxide Heterostructures: Cases of SrRuO3 and SrIrO3-Based Artificial Superlattices </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Jeong%2C+S+G">Seung Gyo Jeong</a>, <a href="/search/cond-mat?searchtype=author&query=Oh%2C+J+Y">Jin Young Oh</a>, <a href="/search/cond-mat?searchtype=author&query=Hao%2C+L">Lin Hao</a>, <a href="/search/cond-mat?searchtype=author&query=Liu%2C+J">Jian Liu</a>, <a href="/search/cond-mat?searchtype=author&query=Choi%2C+W+S">Woo Seok Choi</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2312.16748v1-abstract-short" style="display: inline;"> Unexpected, yet useful functionalities emerge when two or more materials merge coherently. Artificial oxide superlattices realize atomic and crystal structures that are not available in nature, thus providing controllable correlated quantum phenomena. This review focuses on 4d and 5d oxide superlattices, in which the spin-orbit coupling plays a significant role compared with conventional 3d oxide… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.16748v1-abstract-full').style.display = 'inline'; document.getElementById('2312.16748v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2312.16748v1-abstract-full" style="display: none;"> Unexpected, yet useful functionalities emerge when two or more materials merge coherently. Artificial oxide superlattices realize atomic and crystal structures that are not available in nature, thus providing controllable correlated quantum phenomena. This review focuses on 4d and 5d oxide superlattices, in which the spin-orbit coupling plays a significant role compared with conventional 3d oxide superlattices. Modulations in crystal structures with octahedral distortion, phonon engineering, electronic structures, spin orderings, and dimensionality control are discussed for 4d oxide superlattices. Atomic and magnetic structures, Jeff = 1/2 pseudospin and charge fluctuations, and the integration of topology and correlation are discussed for 5d oxide superlattices. This review provides insights into how correlated quantum phenomena arise from the deliberate design of superlattice structures that give birth to novel functionalities. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.16748v1-abstract-full').style.display = 'none'; document.getElementById('2312.16748v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">68 pages</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> published in 2023 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.09322">arXiv:2311.09322</a> <span> [<a href="https://arxiv.org/pdf/2311.09322">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Strongly Correlated Electrons">cond-mat.str-el</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1002/smll.202303176">10.1002/smll.202303176 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Exotic magnetic anisotropy near digitized dimensional Mott boundary </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Jeong%2C+S+G">Seung Gyo Jeong</a>, <a href="/search/cond-mat?searchtype=author&query=Kim%2C+J">Jihyun Kim</a>, <a href="/search/cond-mat?searchtype=author&query=Min%2C+T">Taewon Min</a>, <a href="/search/cond-mat?searchtype=author&query=Song%2C+S">Sehwan Song</a>, <a href="/search/cond-mat?searchtype=author&query=Oh%2C+J+Y">Jin Young Oh</a>, <a href="/search/cond-mat?searchtype=author&query=Noh%2C+W">Woo-suk Noh</a>, <a href="/search/cond-mat?searchtype=author&query=Park%2C+S">Sungkyun Park</a>, <a href="/search/cond-mat?searchtype=author&query=Park%2C+T">Tuson Park</a>, <a href="/search/cond-mat?searchtype=author&query=Ok%2C+J+M">Jong Mok Ok</a>, <a href="/search/cond-mat?searchtype=author&query=Lee%2C+J">Jaekwang Lee</a>, <a href="/search/cond-mat?searchtype=author&query=Choi%2C+W+S">Woo Seok Choi</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.09322v1-abstract-short" style="display: inline;"> The magnetic anisotropy of low-dimensional Mott systems exhibits unexpected magnetotransport behavior useful for spin-based quantum electronics. Yet, the anisotropy of natural materials is inherently determined by the crystal structure, highly limiting its engineering. We demonstrate the magnetic anisotropy modulation near a digitized dimensional Mott boundary in artificial superlattices composed… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.09322v1-abstract-full').style.display = 'inline'; document.getElementById('2311.09322v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.09322v1-abstract-full" style="display: none;"> The magnetic anisotropy of low-dimensional Mott systems exhibits unexpected magnetotransport behavior useful for spin-based quantum electronics. Yet, the anisotropy of natural materials is inherently determined by the crystal structure, highly limiting its engineering. We demonstrate the magnetic anisotropy modulation near a digitized dimensional Mott boundary in artificial superlattices composed of a correlated magnetic monolayer SrRuO3 and nonmagnetic SrTiO3. The magnetic anisotropy is initially engineered by modulating the interlayer coupling strength between the magnetic monolayers. Interestingly, when the interlayer coupling strength is maximized, a nearly degenerate state is realized, in which the anisotropic magnetotransport is strongly influenced by both the thermal and magnetic energy scales. Our results offer a new digitized control for magnetic anisotropy in low-dimensional Mott systems, inspiring promising integration of Mottronics and spintronics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.09322v1-abstract-full').style.display = 'none'; document.getElementById('2311.09322v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">30 pages</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Small 19, 2303176 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2301.01959">arXiv:2301.01959</a> <span> [<a href="https://arxiv.org/pdf/2301.01959">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1111/jace.18789">10.1111/jace.18789 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Application of Machine Learning to Sporadic Experimental Data for Understanding Epitaxial Strain Relaxation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cond-mat?searchtype=author&query=Oh%2C+J+Y">Jin Young Oh</a>, <a href="/search/cond-mat?searchtype=author&query=Shin%2C+D">Dongwon Shin</a>, <a href="/search/cond-mat?searchtype=author&query=Choi%2C+W+S">Woo Seok Choi</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2301.01959v1-abstract-short" style="display: inline;"> Understanding epitaxial strain relaxation is one of the key challenges in functional thin films with strong structure-property relation. Herein, we employ an emerging data analytics approach to quantitatively evaluate the underlying relationships between critical thickness (hc) of strain relaxation and various physical and chemical features, despite the sporadic experimental data points available.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.01959v1-abstract-full').style.display = 'inline'; document.getElementById('2301.01959v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2301.01959v1-abstract-full" style="display: none;"> Understanding epitaxial strain relaxation is one of the key challenges in functional thin films with strong structure-property relation. Herein, we employ an emerging data analytics approach to quantitatively evaluate the underlying relationships between critical thickness (hc) of strain relaxation and various physical and chemical features, despite the sporadic experimental data points available. First, we have collected and refined reported hc of perovskite oxide thin film/substrate system to construct a consistent sub-dataset which captures a common trend among the varying experimental details. Then, we employ correlation analyses and feature engineering to find the most relevant feature set which include Poisson's ratio and lattice mismatch. With the insight offered by correlation analyses and feature engineering, machine learning (ML) models have been trained to deduce a decent accuracy, which has been further validated experimentally. the demonstrated framework is expected to be efficiently extended to the other classes of thin films in understanding hc. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.01959v1-abstract-full').style.display = 'none'; document.getElementById('2301.01959v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 January, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">24 pages, 5 figures</span> </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 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