Observation of Spin Splitting in Room‐Temperature Metallic Antiferromagnet CrSb
Recently, unconventional antiferromagnets that enable the spin splitting (SS) of electronic states have been theoretically proposed and experimentally realized, where the magnetic sublattices containing moments pointing at different directions are connected by a novel set of symmetries. Such SS is substantial, k-dependent, and independent of the spin-orbit coupling (SOC) strength, making these magnets promising materials for antiferromagnetic spintronics. Here, combined with angle-resolved photoemission spectroscopy (ARPES) and density functional theory (DFT) calculations, a systematic study on CrSb, a metallic spin-split antiferromagnet candidate with Néel temperature T<sub>N</sub> = 703 K, is conducted. The data reveal the electronic structure of CrSb along both out-of-plane and in-plane momentum directions, rendering an anisotropic k-dependent SS that agrees well with the calculational results. The magnitude of such SS reaches up to at least 0.8 eV at non-high-symmetry momentum points, which is significantly higher than the largest known SOC-induced SS. This compound expands the choice of materials in the field of antiferromagnetic spintronics and is likely to stimulate subsequent investigations of high-efficiency spintronic devices that are functional at room temperature.
Authors
- Zhengtai Liu
- Yichen Yang (ORCID: https://orcid.org/0000-0003-3740-0000)
- Xiang‐Rui Liu
- Masashi Arita (ORCID: https://orcid.org/0000-0003-0743-4381)
- Yu‐Jie Hao (ORCID: https://orcid.org/0000-0003-0068-9664)
- Zhicheng Jiang (ORCID: https://orcid.org/0000-0001-7407-1176)
- K. Shimada (ORCID: https://orcid.org/0000-0002-1945-2352)
- Kohei Yamagami (ORCID: https://orcid.org/0000-0001-6997-6157)
- Qihang Liu (ORCID: https://orcid.org/0000-0001-9843-2482)
- T. Shao (ORCID: https://orcid.org/0000-0002-0398-2519)
- Meng Zeng (ORCID: https://orcid.org/0000-0002-5432-492X)
- Chang Liu (ORCID: https://orcid.org/0000-0002-7738-743X)
- Pengfei Liu (ORCID: https://orcid.org/0000-0002-9170-5238)
- Mao Ye (ORCID: https://orcid.org/0000-0002-7078-2402)
- Yue Dai
- Xiao‐Ming Ma
- Mingyuan Zhu
- Yaobo Huang
- Gexing Qu
- Yu‐Peng Zhu
- Xiaoqian Zhang
Institutions
- Hiroshima University (JP)
- University of Science and Technology of China (CN)
- Chinese Academy of Sciences (CN)
- Southern University of Science and Technology (CN)
- Japan Synchrotron Radiation Research Institute (JP)
- Shanghai Advanced Research Institute (CN)
- Shanghai Institute of Microsystem and Information Technology (CN)
- National Synchrotron Radiation Laboratory (CN)
- Institute of Physics (CN)
- Southeast University (CN)
Publication Details
- Journal
- Advanced Science
- Published
- 2024-09-20
- DOI
- https://doi.org/10.1002/advs.202406529
- Citations
- 79
- Primary Topic
- Physics of Superconductivity and Magnetism
- Type
- article
- Field-Weighted Citation Impact
- 24.56
Funders
- Salt Science Research Foundation
- Guangdong Innovative and Entrepreneurial Research Team Program
- National Natural Science Foundation of China
- Natural Science Foundation of Guangdong Province
- Southern University of Science and Technology
- Guangdong Provincial Key Laboratory Of Computational Science And Material Design
- National Key Research and Development Program of China