TY - JOUR
T1 - Planar Hall Effect in Antiferromagnetic MnTe Thin Films
AU - Yin, Gen
AU - Yu, Jie Xiang
AU - Liu, Yizhou
AU - Lake, Roger K.
AU - Zang, Jiadong
AU - Wang, Kang L.
N1 - Funding Information:
The transport analysis and simulations done by G.Y., Y.L., R.L., and K.W. are supported by Spins and Heat in Nanoscale Electronic Systems (SHINES), an EFRC funded by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES) under Award No. SC0012670. J.X.Y. and J.Z. were supported by the U.S. DOE, Office of Science, BES under Award No. DE-SC0016424. First-principles calculations were conducted on Extreme Science and Engineering Discovery Environment (XSEDE) under Grant No. TG-PHY170023, and Trillian, a Cray XE6m-200 supercomputer at UNH supported by the NSF MRI program under Grant No. PHY-1229408. G.Y. and K.W. are also grateful for the support from the National Science Foundation (DMR-1411085), and the ARO program under Contract No. W911NF-15-1-10561.
Publisher Copyright:
© 2019 American Physical Society.
PY - 2019/3/13
Y1 - 2019/3/13
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.122.106602
DO - 10.1103/PhysRevLett.122.106602
M3 - Article
C2 - 30932676
AN - SCOPUS:85062962690
VL - 122
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 10
M1 - 106602
ER -