期刊
PHYSICAL REVIEW LETTERS
卷 112, 期 20, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.112.206602
关键词
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资金
- Deutsche Forschungsgemeinschaft [SFB/TR 12, FR 2627/3-1]
- NSF [DMR1306734]
- D-ITP consortium, a program of the Netherlands Organization for Scientific Research (NWO)
- Dutch Ministry of Education, Culture and Science (OCW)
We present an analytic theory of quantum criticality in the quasi-one-dimensional topological Anderson insulators of class AIII and BDI. We describe the systems in terms of two parameters (g, chi) representing localization and topological properties, respectively. Surfaces of half-integer valued chi define phase boundaries between distinct topological sectors. Upon increasing system size, the two parameters exhibit flow similar to the celebrated two-parameter flow describing the class A quantum Hall insulator. However, unlike the quantum Hall system, an exact analytical description of the entire phase diagram can be given. We check the quantitative validity of our theory by comparison to numerical transfer matrix computations.
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