Crystal time-reversal symmetry breaking and spontaneous Hall effect in collinear antiferromagnets

<!DOCTYPE html>     <html class="no-js" lang="en">  <head> <title>Crystal time-reversal symmetry breaking and spontaneous Hall effect in collinear antiferromagnets - NASA/ADS</title>  <link rel="apple-touch-icon" sizes="180x180" href="//styles/favicon/apple-touch-icon.png" /> <link rel="icon" type="image/png" sizes="32x32" href="//styles/favicon/favicon-32x32.png" /> <link rel="icon" type="image/png" sizes="16x16" href="//styles/favicon/favicon-16x16.png" /> <link rel="manifest" href="//styles/favicon/site.webmanifest" /> <link rel="mask-icon" href="//styles/favicon/safari-pinned-tab.svg" color="#5bbad5" /> <meta name="apple-mobile-web-app-title" content="NASA ADS" /> <meta name="application-name" content="NASA ADS" /> <meta name="msapplication-TileColor" content="#ffc40d" /> <meta name="theme-color" content="#ffffff" />  <link rel="stylesheet" href="/styles/css/styles.css"> <meta name="robots" content="noarchive"> <link rel="canonical" href="http://ui.adsabs.harvard.edu/abs/2020SciA....6.8809S/abstract"/> <meta name="description" content="Electrons, commonly moving along the applied electric field, acquire in certain magnets a dissipationless transverse velocity. This spontaneous Hall effect, discovered more than a century ago, has been understood in terms of the time-reversal symmetry breaking by the internal spin-structure of a ferromagnetic, noncolinear antiferromagnetic or skyrmionic form. Here we identify previously overlooked robust Hall effect mechanism arising from collinear antiferromagnetism combined with nonmagnetic atoms at non-centrosymmetric positions. We predict a large magnitude of this crystal Hall effect in a room-temperature collinear antiferromagnet RuO$_2$ and catalogue, based on our symmetry rules, extensive families of material candidates. We show that the crystal Hall effect is accompanied by the possibility to control its sign by the crystal chirality. We illustrate that accounting for the full magnetization density distribution instead of the simplified spin-structure sheds new light on symmetry breaking phenomena in complex magnets and opens an alternative avenue towards quantum materials engineering for low-dissipation nanoelectronics.">  <meta property="og:type" content="article"> <meta property="og:title" content="Crystal time-reversal symmetry breaking and spontaneous Hall effect in collinear antiferromagnets"> <meta property="og:site_name" content="NASA/ADS"> <meta property="og:description" content="Electrons, commonly moving along the applied electric field, acquire in certain magnets a dissipationless transverse velocity. This spontaneous Hall effect, discovered more than a century ago, has been understood in terms of the time-reversal symmetry breaking by the internal spin-structure of a ferromagnetic, noncolinear antiferromagnetic or skyrmionic form. Here we identify previously overlooked robust Hall effect mechanism arising from collinear antiferromagnetism combined with nonmagnetic atoms at non-centrosymmetric positions. We predict a large magnitude of this crystal Hall effect in a room-temperature collinear antiferromagnet RuO$_2$ and catalogue, based on our symmetry rules, extensive families of material candidates. We show that the crystal Hall effect is accompanied by the possibility to control its sign by the crystal chirality. We illustrate that accounting for the full magnetization density distribution instead of the simplified spin-structure sheds new light on symmetry breaking phenomena in complex magnets and opens an alternative avenue towards quantum materials engineering for low-dissipation nanoelectronics."> <meta property="og:url" content="https://ui.adsabs.harvard.edu/abs/2020SciA....6.8809S/abstract"> <meta property="og:image" content="https://ui.adsabs.harvard.edu/styles/img/transparent_logo.svg"> <meta property="article:published_time" content="06/2020"> <meta property="article:author" content="艩mejkal, Libor"> <meta property="article:author" content="Gonz谩lez-Hern谩ndez, Rafael"> <meta property="article:author" content="Jungwirth, T."> <meta property="article:author" content="Sinova, J.">  <meta name="citation_journal_title" content="Science Advances"> <meta name="citation_authors" content="艩mejkal, Libor;Gonz谩lez-Hern谩ndez, Rafael;Jungwirth, T.;Sinova, J."> <meta name="citation_title" content="Crystal time-reversal symmetry breaking and spontaneous Hall effect in collinear antiferromagnets"> <meta name="citation_date" content="06/2020"> <meta name="citation_volume" content="6"> <meta name="citation_issue" content="23"> <meta name="citation_firstpage" content="eaaz8809"> <meta name="citation_doi" content="10.1126/sciadv.aaz8809"> <meta name="citation_language" content="en"> <meta name="citation_keywords" content="Condensed Matter - Mesoscale and Nanoscale Physics"> <meta name="citation_keywords" content="Condensed Matter - Strongly Correlated Electrons"> <meta name="citation_abstract_html_url" content="https://ui.adsabs.harvard.edu/abs/2020SciA....6.8809S/abstract"> <meta name="citation_publication_date" content="06/2020"> <meta name="citation_arxiv_id" content="arXiv:1901.00445" /> <link title="schema(PRISM)" rel="schema.prism" href="http://prismstandard.org/namespaces/1.2/basic/" /> <meta name="prism.publicationDate" content="06/2020" /> <meta name="prism.publicationName" content="SciA" /> <meta name="prism.volume" content="6" /> <meta name="prism.startingPage" content="eaaz8809" /> <link title="schema(DC)" rel="schema.dc" href="http://purl.org/dc/elements/1.1/" /> <meta name="dc.identifier" content="doi:10.1126/sciadv.aaz8809" /> <meta name="dc.date" content="06/2020" /> <meta name="dc.source" content="SciA" /> <meta name="dc.title" content="Crystal time-reversal symmetry breaking and spontaneous Hall effect in collinear antiferromagnets" /> <meta name="dc.creator" content="艩mejkal, Libor"> <meta name="dc.creator" content="Gonz谩lez-Hern谩ndez, Rafael"> <meta name="dc.creator" content="Jungwirth, T."> <meta name="dc.creator" content="Sinova, J.">  <meta name="twitter:card" content="summary_large_image"/> <meta name="twitter:description" content="Electrons, commonly moving along the applied electric field, acquire in certain magnets a dissipationless transverse velocity. This spontaneous Hall effect, discovered more than a century ago, has been understood in terms of the time-reversal symmetry breaking by the internal spin-structure of a ferromagnetic, noncolinear antiferromagnetic or skyrmionic form. Here we identify previously overlooked robust Hall effect mechanism arising from collinear antiferromagnetism combined with nonmagnetic atoms at non-centrosymmetric positions. We predict a large magnitude of this crystal Hall effect in a room-temperature collinear antiferromagnet RuO$_2$ and catalogue, based on our symmetry rules, extensive families of material candidates. We show that the crystal Hall effect is accompanied by the possibility to control its sign by the crystal chirality. We illustrate that accounting for the full magnetization density distribution instead of the simplified spin-structure sheds new light on symmetry breaking phenomena in complex magnets and opens an alternative avenue towards quantum materials engineering for low-dissipation nanoelectronics."/> <meta name="twitter:title" content="Crystal time-reversal symmetry breaking and spontaneous Hall effect in collinear antiferromagnets"/> <meta name="twitter:site" content="@adsabs"/> <meta name="twitter:domain" content="NASA/ADS"/> <meta name="twitter:image:src" content="https://ui.adsabs.harvard.edu/styles/img/transparent_logo.svg"/> <meta name="twitter:creator" content="@adsabs"/> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"> <base href="/"> <style> .btn-full-ads { color: #fff !important; background-color: #1a1a1a !important; border-color: #1a1a1a !important; margin-top: 9px !important; padding-bottom: 10px !important; padding-top: 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Crystal time-reversal symmetry breaking and spontaneous Hall effect in collinear antiferromagnets - NASA/ADS