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

Preprint

10 October 2006

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0607001

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.

Keywords

QUANTUM SPIN HALL
MAGNETIC RESPONSE
SPIN HALL EFFECT
ORBIT COUPLING

All Related Versions

Version 1, 2006-06-30, ArXiv
Version 2, 2006-10-10, ArXiv
Published version: Physical Review Letters, 97 (23), 236805.

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