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arXiv · 2204.06680

Double version of the Rashba and Dresselhaus spin-orbit coupling

Hu Zhang·Lulu Zhao·Chendong Jin·Ruqian Lian·Peng-Lai Gong·RuiNing Wang·JiangLong Wang·Xing-Qiang Shi
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Abstract

The Rashba and Dresselhaus types of spin-orbit coupling are two typical linear coupling forms. We establish the fundamental physics of a model which can be viewed as the double version of the Rashba and Dresselhaus spin-orbit coupling. This model describes the low energy physics of a class of massless Dirac fermions in spin-orbit systems. The physical properties of the massless Dirac fermions are determined by the mathematical relations of spin-orbit coefficients. For equal Rashba and Dresselhauss coupling constants, k-independent eigenspinors and a persistent spin helix combined with massless birefringent Dirac fermions emerge in this model. The spin-orbit coupled systems described by this model have potential technological applications from spintronics to quantum computation.

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Hu Zhang, Lulu Zhao, Chendong Jin, Ruqian Lian, Peng-Lai Gong, RuiNing Wang, JiangLong Wang, Xing-Qiang Shi. 2022-04-14. Double version of the Rashba and Dresselhaus spin-orbit coupling. https://arxiv.org/abs/2204.06680

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