Extremely strong spin-orbit coupling effect in light element altermagnetic materials
arxiv(2024)
摘要
Spin-orbit coupling is a key to realize many novel physical effects in
condensed matter physics, but the mechanism to achieve strong spin-orbit
coupling effect in light element antiferromagnetic compounds has not been
explored. In this work, based on symmetry analysis and the first-principles
electronic structure calculations, we demonstrate that strong spin-orbit
coupling effect can be realized in light element altermagnetic materials, and
propose a mechanism for realizing the corresponding effective spin-orbit
coupling. This mechanism reveals the cooperative effect of crystal symmetry,
electron occupation, electronegativity, electron correlation, and intrinsic
spin-orbit coupling. Our work not only promotes the understanding of light
element compounds with strong spin-orbit coupling effect, but also provides an
alternative for realizing light element compounds with an effective strong
spin-orbit coupling.
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