Correlation effects in quantum spin-Hall insulators: a quantum Monte Carlo study.

@article{Hohenadler2011CorrelationEI,
title={Correlation effects in quantum spin-Hall insulators: a quantum Monte Carlo study.},
journal={Physical review letters},
year={2011},
volume={106 10},
pages={
100403
}
}
• Published 23 November 2010
• Physics
• Physical review letters
We consider the Kane-Mele model supplemented by a Hubbard U term. The phase diagram is mapped out using projective auxiliary field quantum Monte Carlo simulations. The quantum spin liquid of the Hubbard model is robust against weak spin-orbit interaction, and is not adiabatically connected to the spin-Hall insulating state. Beyond a critical value of U>U(c) both states are unstable toward magnetic ordering. In the quantum spin-Hall state we study the spin, charge, and single-particle dynamics…

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