Broken Kramers Degeneracy in Altermagnetic MnTe
Seoul National University · Institute for Basic Science · +4 more institutions
Abstract
Altermagnetism is a newly identified fundamental class of magnetism with vanishing net magnetization and time-reversal symmetry broken electronic structure. Probing the unusual electronic structure with nonrelativistic spin splitting would be a direct experimental verification of an altermagnetic phase. By combining high-quality film growth and in situ angle-resolved photoemission spectroscopy, we report the electronic structure of an altermagnetic candidate, α-MnTe. Temperature-dependent study reveals the lifting of Kramers degeneracy accompanied by a magnetic phase transition at T_{N}=267 K with spin splitting of up to 370 meV, providing direct spectroscopic evidence for altermagnetism in MnTe.
Citation impact
- FWCI
- 37.22
- Percentile
- 100%
- References
- 52
Authors
12- SLSuyoung LeeCorresponding
Seoul National University, Institute for Basic Science
- SLSangjae Lee
Seoul National University, Institute for Basic Science
- SJSaegyeol Jung
Seoul National University, Institute for Basic Science
- JJJi-Won Jung
Pohang University of Science and Technology, Institute for Basic Science
- DKDonghan Kim
Seoul National University, Institute for Basic Science
Topics & keywords
- Magnetism
- Condensed matter physics
- Degeneracy (biology)
- Physics
- Electronic structure
- Photoemission spectroscopy
- Symmetry (geometry)
- Magnetization