Dislocation charges reveal two-dimensional topological crystalline invariants

Article

关键词: HGTE QUANTUM-WELLS;    SINGLE DIRAC CONE;    EXPERIMENTAL REALIZATION;    INSULATORS;    SURFACE;    BI2TE3;    PHASE;    SNTE;   

DOI  :  10.1103/PhysRevB.97.201111

来源: SCIE

【 摘 要 】

We identify a one-to-one correspondence between the charge localized around a dislocation characterized by a generic Burgers vector and the Berry phase associated with the electronic Bloch waves of two-dimensional crystalline insulators. Using this correspondence, we reveal a link between dislocation charges and the topological invariants of inversion and rotation symmetry-protected insulating phases both in the absence and in the presence of time-reversal symmetry. Our findings demonstrate that dislocation charges can be used as generic probes of crystalline topologies.

【 授权许可】

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