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arXiv · 1002.2151

Spin-orbit coupling induced anisotropy effects in bimetallic antiferromagnets: A route towards antiferromagnetic spintronics

Alexander B. Shick·Sergii Khmelevskyi·Oleg N. Mryasov·Joerg Wunderlich·Tomas Jungwirth
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Abstract

Magnetic anisotropy phenomena in bimetallic antiferromagnets Mn$_2$Au and MnIr are studied by first-principles density functional theory calculations. We find strong and lattice-parameter dependent magnetic anisotropies of the ground state energy, chemical potential, and density of states, and attribute these anisotropies to combined effects of large moment on the Mn 3$d$ shell and large spin-orbit coupling on the 5$d$ shell of the noble metal. Large magnitudes of the proposed effects can open a route towards spintronics in compensated antiferromagnets without involving ferromagnetic elements.

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Alexander B. Shick, Sergii Khmelevskyi, Oleg N. Mryasov, Joerg Wunderlich, Tomas Jungwirth. 2010-02-10. Spin-orbit coupling induced anisotropy effects in bimetallic antiferromagnets: A route towards antiferromagnetic spintronics. https://doi.org/10.1103/physrevb.81.212409

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