Ask a Question

Prefer a chat interface with context about you and your work?

Tunable Anderson metal-insulator transition in quantum spin-Hall insulators

Tunable Anderson metal-insulator transition in quantum spin-Hall insulators

We numerically study disorder effects in the Bernevig-Hughes-Zhang (BHZ) model, and we find that the Anderson transition of a quantum spin-Hall insulator (QSHI) is determined by model parameters. The BHZ Hamiltonian is equivalent to two decoupled spin blocks that belong to the unitary class. In contrast to the common belief …