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Phase transition between the quantum spin Hall and insulator phases in 3D: emergence of a topological gapless phase
2007
New Journal of Physics
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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.
doi:10.1088/1367-2630/9/9/356
fatcat:xwzfqt337rej5o2ogi6hyyr63e