Uncovering spin-orbit coupling-independent hidden spin polarization of energy bands in antiferromagnets
Abstract Many textbook physical effects in crystals are enabled by some specific symmetries. In contrast to such ‘apparent effects’, ‘hidden effect X’ refers to the general condition where the nominal global system symmetry would disallow the effect X, whereas the symmetry of local sectors within th...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-08-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-40877-8 |
| _version_ | 1797558612980137984 |
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| author | Lin-Ding Yuan Xiuwen Zhang Carlos Mera Acosta Alex Zunger |
| author_facet | Lin-Ding Yuan Xiuwen Zhang Carlos Mera Acosta Alex Zunger |
| author_sort | Lin-Ding Yuan |
| collection | DOAJ |
| description | Abstract Many textbook physical effects in crystals are enabled by some specific symmetries. In contrast to such ‘apparent effects’, ‘hidden effect X’ refers to the general condition where the nominal global system symmetry would disallow the effect X, whereas the symmetry of local sectors within the crystal would enable effect X. Known examples include the hidden Rashba and/or hidden Dresselhaus spin polarization that require spin-orbit coupling, but unlike their apparent counterparts are demonstrated to exist in non-magnetic systems even in inversion-symmetric crystals. Here, we discuss hidden spin polarization effect in collinear antiferromagnets without the requirement for spin-orbit coupling (SOC). Symmetry analysis suggests that antiferromagnets hosting such effect can be classified into six types depending on the global vs local symmetry. We identify which of the possible collinear antiferromagnetic compounds will harbor such hidden polarization and validate these symmetry enabling predictions with first-principles density functional calculations for several representative compounds. This will boost the theoretical and experimental efforts in finding new spin-polarized materials. |
| first_indexed | 2024-03-10T17:32:58Z |
| format | Article |
| id | doaj.art-ccf598511d6d4749ac7c50d082f7b6c1 |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-10T17:32:58Z |
| publishDate | 2023-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-ccf598511d6d4749ac7c50d082f7b6c12023-11-20T09:57:24ZengNature PortfolioNature Communications2041-17232023-08-0114111010.1038/s41467-023-40877-8Uncovering spin-orbit coupling-independent hidden spin polarization of energy bands in antiferromagnetsLin-Ding Yuan0Xiuwen Zhang1Carlos Mera Acosta2Alex Zunger3Renewable and Sustainable Energy Institute, University of ColoradoRenewable and Sustainable Energy Institute, University of ColoradoCenter for Natural and Human Sciences, Federal University of ABC, Santo AndreRenewable and Sustainable Energy Institute, University of ColoradoAbstract Many textbook physical effects in crystals are enabled by some specific symmetries. In contrast to such ‘apparent effects’, ‘hidden effect X’ refers to the general condition where the nominal global system symmetry would disallow the effect X, whereas the symmetry of local sectors within the crystal would enable effect X. Known examples include the hidden Rashba and/or hidden Dresselhaus spin polarization that require spin-orbit coupling, but unlike their apparent counterparts are demonstrated to exist in non-magnetic systems even in inversion-symmetric crystals. Here, we discuss hidden spin polarization effect in collinear antiferromagnets without the requirement for spin-orbit coupling (SOC). Symmetry analysis suggests that antiferromagnets hosting such effect can be classified into six types depending on the global vs local symmetry. We identify which of the possible collinear antiferromagnetic compounds will harbor such hidden polarization and validate these symmetry enabling predictions with first-principles density functional calculations for several representative compounds. This will boost the theoretical and experimental efforts in finding new spin-polarized materials.https://doi.org/10.1038/s41467-023-40877-8 |
| spellingShingle | Lin-Ding Yuan Xiuwen Zhang Carlos Mera Acosta Alex Zunger Uncovering spin-orbit coupling-independent hidden spin polarization of energy bands in antiferromagnets Nature Communications |
| title | Uncovering spin-orbit coupling-independent hidden spin polarization of energy bands in antiferromagnets |
| title_full | Uncovering spin-orbit coupling-independent hidden spin polarization of energy bands in antiferromagnets |
| title_fullStr | Uncovering spin-orbit coupling-independent hidden spin polarization of energy bands in antiferromagnets |
| title_full_unstemmed | Uncovering spin-orbit coupling-independent hidden spin polarization of energy bands in antiferromagnets |
| title_short | Uncovering spin-orbit coupling-independent hidden spin polarization of energy bands in antiferromagnets |
| title_sort | uncovering spin orbit coupling independent hidden spin polarization of energy bands in antiferromagnets |
| url | https://doi.org/10.1038/s41467-023-40877-8 |
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