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Kane-Mele-Hubbard Model

2010年11月29日 留下评论 Go to comments

Recently two preprints posted on arXiv studied Kane-Mele-Hubbard model(Kane-Mele model+Hubbard type on-site repulsion) at half-filling using QMC. There is no sign problem due to particle-hole symmetry. Basically, at finite U topological insulating phase undergoes a phase transition to antiferromagnetically ordered phase.

Particle-hole symmetry and interaction effects in the Kane-Mele-Hubbard model
Dong Zheng, Congjun Wu, Guang-Ming Zhang

Correlation Effects in Quantum Spin Hall Insulators: a Quantum Monte Carlo Study
M. Hohenadler, T. C. Lang, F. F. Assaad

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