Large-Gap Quantum Spin Hall Insulators in Tin Films
Large-Gap Quantum Spin Hall Insulators in Tin Films
The search for large-gap quantum spin Hall (QSH) insulators and effective approaches to tune QSH states is important for both fundamental and practical interests. Based on first-principles calculations we find two-dimensional tin films are QSH insulators with sizable bulk gaps of 0.3 eV, sufficiently large for practical applications at room …