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

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

2007-10-04

arxiv.org/abs/0710.0930v1

New J. Phys. 9, 356 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

16 pages, 5 figures

Scientific paper

10.1088/1367-2630/9/9/356

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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