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Quantum Spin Hall Effect and Enhanced Magnetic Response by Spin-Orbit Coupling

Shuichi Murakami
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Abstract

We show that the spin Hall conductivity in insulators is related with a magnetic susceptibility representing the strength of the spin-orbit coupling. We use this relationship as a guiding principle to search real materials showing quantum spin Hall effect. As a result, we theoretically predict that bismuth will show the quantum spin Hall effect, both by calculating the helical edge states, and by showing the non-triviality of the Z_2 topological number, and propose possible experiments.

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Shuichi Murakami. 2006-10-10. Quantum Spin Hall Effect and Enhanced Magnetic Response by Spin-Orbit Coupling. https://doi.org/10.1103/physrevlett.97.236805

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