期刊
PHYSICAL REVIEW LETTERS
卷 101, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.086801
关键词
-
资金
- Materials Sciences and Engineering Division, of the U. S. Department of Energy [DE-AC02-05CH11231]
In this Letter we construct a simple, controllable, two-dimensional model based on a topological band insulator. It has many attractive properties. (1) We obtain spin-charge separated solitons that are associated with dynamic pi fluxes. (2) These solitons obey Bose statistics and their condensation triggers a phase transition from a spin Hall insulator to an easy-plane ferromagnet. (3) It suggests an alternative way to classify the Z(2) topological band insulator without resorting to the sample boundary.
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