Planar Hall Effect in Antiferromagnetic MnTe Thin Films
Journal Article
·
· Physical Review Letters
- Univ. of California, Los Angeles, CA (United States). Dept. of Electrical and Computer Engineering
- Univ. of New Hampshire, Durham, NH (United States). Dept. of Physics and Materials Science Program
- Chinese Academy of Sciences (CAS), Beijing (China); Univ. of California, Riverside, CA (United States). Lab. for Terascale and Terahertz Electronics (LATTE), Dept. of Electrical and Computer Engineering
- Univ. of California, Riverside, CA (United States). Lab. for Terascale and Terahertz Electronics (LATTE), Dept. of Electrical and Computer Engineering
- Univ. of California, Los Angeles, CA (United States). Dept. of Electrical and Computer Engineering, and Dept. of Physics and Astronomy
We show that the spin-orbit coupling (SOC) in α-MnTe impacts the transport behavior by generating an anisotropic valence-band splitting, resulting in four spin-polarized pockets near Γ. A minimal k·p model is constructed to capture this splitting by group theory analysis, a tight-binding model, and ab initio calculations. The model is shown to describe the rotation symmetry of the zero-field planer Hall effect (PHE). The PHE originates from the band anisotropy given by SOC, and is quantitatively estimated to be 25%–31% for an ideal thin film with a single antiferromagnetic domain.
- Research Organization:
- Univ. of California, Riverside, CA (United States); Energy Frontier Research Centers (EFRC) (United States). Spins and Heat in Nanoscale Electronic Systems (SHINES); Univ. of New Hampshire, Durham, NH (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- SC0012670; SC0016424
- OSTI ID:
- 1566696
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 10 Vol. 122; ISSN 0031-9007; ISSN PRLTAO
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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