Phase transition between the quantum spin Hall and insulator phases in 3D: emergence of a topological gapless phase

2007/10/04 by Shuichi Murakami · 3 citations
Physics and Astronomy · #cond-mat.mes-hall

paper · pdf · doi:10.1088/1367-2630/9/9/356

published as New J. Phys. 9, 356 (2007) · 16 pages, 5 figures

arxiv created 2007/10/04 · arxiv updated 2009/12/01

Abstract

Phase transitions between the quantum spin Hall and the insulator phases in three dimensions are studied. We find that in inversion-asymmetric systems there appears a gapless phase between the quantum spin Hall and insulator phases in three dimensions, which is in contrast with the two-dimensional case. Existence of this gapless phase stems from a topological nature of gapless points (diabolical points) in three dimensions, but not in two dimensions.

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