Lee, DH , Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
部门归属:
Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA; Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA; Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China; Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要:
An important characteristic of topological band insulators is the necessary presence of in-gap edge states on the sample boundary. We utilize this fact to show that when the boundary is reconnected with a twist, there are always zero-energy defect states. This provides a natural connection among novel defects in the two-dimensional p(x)+ip(y) superconductor, the Kitaev model, the fractional quantum Hall effect, and the one-dimensional domain wall of polyacetylene.
Lee, Dung-Hai,Zhang, Guang-Ming,Xiang, Tao. Edge solitons of topological insulators and fractionalized quasiparticles in two dimensions[J]. PHYSICAL REVIEW LETTERS,2007,99(19):-.
