Atomic-Scale Detection of Néel Vector Switching in the Single-Layer A-type Antiferromagnet Cr2S3-2D
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arXiv
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| Autori principali: | , , , , , , , , , , , |
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| Natura: | Preprint |
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2026
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| _version_ | 1866908947871432704 |
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| author | Safeer, Affan Dias, Calisa Ghorbani-Asl, Mahdi Karaka, Abdallah Bawankule, Pradyumna Li, Weibin Gargiani, Pierluigi Jolie, Wouter Krasheninnikov, Arkady V. Bedoya-Pinto, Amilcar Michely, Thomas Fischer, Jeison |
| author_facet | Safeer, Affan Dias, Calisa Ghorbani-Asl, Mahdi Karaka, Abdallah Bawankule, Pradyumna Li, Weibin Gargiani, Pierluigi Jolie, Wouter Krasheninnikov, Arkady V. Bedoya-Pinto, Amilcar Michely, Thomas Fischer, Jeison |
| contents | The detection of Néel vector switching in a single-layer A-type antiferromagnet marks an important step toward functional two-dimensional spintronics. Here, Cr$_2$S$_3$-2D, grown on graphene on Ir(110), is established as a first single-layer A-type antiferromagnet. Spin-polarized scanning tunneling microscopy reveals hysteresis loops with a large switching field and a pronounced dependence on island size. X-ray magnetic circular dichroism at the Cr L$_{2,3}$ edges exhibits a tiny signal with a linear magnetic field dependence, consistent with a nearly compensated antiferromagnetic ground state and a Néel temperature of about 160 K. Quantitative analysis of the island-size dependence of the switching field, together with first principles calculations, indicates a slight imbalance between the magnetic moments of the two Cr planes of Cr$_2$S$_3$-2D when supported on a substrate. This imbalance results in a net magnetization for the A-type antiferromagnet, which enables the 180$^\circ$ rotation of the Néel vector. Moreover, Cr$_2$S$_3$-2D retains its magnetic properties after several days of exposure to air. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_07245 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Atomic-Scale Detection of Néel Vector Switching in the Single-Layer A-type Antiferromagnet Cr2S3-2D Safeer, Affan Dias, Calisa Ghorbani-Asl, Mahdi Karaka, Abdallah Bawankule, Pradyumna Li, Weibin Gargiani, Pierluigi Jolie, Wouter Krasheninnikov, Arkady V. Bedoya-Pinto, Amilcar Michely, Thomas Fischer, Jeison Mesoscale and Nanoscale Physics Materials Science The detection of Néel vector switching in a single-layer A-type antiferromagnet marks an important step toward functional two-dimensional spintronics. Here, Cr$_2$S$_3$-2D, grown on graphene on Ir(110), is established as a first single-layer A-type antiferromagnet. Spin-polarized scanning tunneling microscopy reveals hysteresis loops with a large switching field and a pronounced dependence on island size. X-ray magnetic circular dichroism at the Cr L$_{2,3}$ edges exhibits a tiny signal with a linear magnetic field dependence, consistent with a nearly compensated antiferromagnetic ground state and a Néel temperature of about 160 K. Quantitative analysis of the island-size dependence of the switching field, together with first principles calculations, indicates a slight imbalance between the magnetic moments of the two Cr planes of Cr$_2$S$_3$-2D when supported on a substrate. This imbalance results in a net magnetization for the A-type antiferromagnet, which enables the 180$^\circ$ rotation of the Néel vector. Moreover, Cr$_2$S$_3$-2D retains its magnetic properties after several days of exposure to air. |
| title | Atomic-Scale Detection of Néel Vector Switching in the Single-Layer A-type Antiferromagnet Cr2S3-2D |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2604.07245 |