Original paper
Fragile topological insulators protected by rotation symmetry without spin-orbit coupling
Abstract
We present a series of models of three-dimensional rotation-symmetric fragile topological insulators in class AI (time-reversal symmetric and spin-orbit-free systems), which have gapless surface states protected by time-reversal (T and nfold rotation ({C}_{n} symmetries (n=2,4,6. Our models are generalizations of Fu's model of a spinless topological crystalline insulator, in which orbital degrees of freedom play the role of...
Paper Details
Title
Fragile topological insulators protected by rotation symmetry without spin-orbit coupling
Published Date
Nov 9, 2021
Volume
104
Issue
19
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History