期刊
AIP ADVANCES
卷 7, 期 5, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4974059
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资金
- NSF [ERC-Translational Applications of Nanoscale Multiferroic Systems (TANMS)-1160504, DMR-1532249]
- National Natural Science Foundation of China [11174220, 11374226]
Using ab initio electronic structure calculations we have investigated the effect of epitaxial strain on the magnetocrystalline anisotropy (MCA) of ultrathin FeRh/MgO heterostructures. Analysis of the energy- and k-resolved distribution of the orbital character of the band structure reveals that MCA largely arises from the spin-orbit coupling (SOC) between d(x2-y2) and d(xz/dyz) orbitals of Fe atoms at the FeRh/MgO interface. We demonstrate that the strain has significant effects on the MCA: It not only affects the value of the MCA but also induces a switching of the magnetic easy axis from perpendicular to in-plane direction. The mechanism is the strain-induced shifts of the SOC d-states. Our work demonstrates that strain engineering can open a viable pathway towards tailoring magnetic properties for antiferromagetic spintronic applications. (C) 2017 Author(s).
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