<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mo stretchy="false">(</mml:mo><mml:mi>d</mml:mi><mml:mo>−</mml:mo><mml:mn>2</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math>-Dimensional Edge States of Rotation Symmetry Protected Topological States

Song, Zhida; Fang, Zhong; Fang, Chen

doi:10.1103/physrevlett.119.246402

Public

(d−2)-Dimensional Edge States of Rotation Symmetry Protected Topological States

Published in Physical Review Letters • Dec 11, 2017

Authors:

Zhida Song

Zhong Fang

Chen Fang

Abstract

We study fourfold rotation-invariant gapped topological systems with time-reversal symmetry in two and three dimensions (d=2, 3). We show that in both cases nontrivial topology is manifested by the presence of the (d-2)-dimensional edge states, existing at a point in 2D or along a line in 3D. For fe...

Subject

Point reflection

Algorithm

Physics

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