Numerical transfer-matrix calculation on graphene ribbons shows Valley Hall modes transmit nearly perfectly through bends irrespective of valley-index conservation.
2016 Pseudo-time-reversal symmetry and topological edge states in two-dimensional acoustic crystals
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Canonical scattering problem in topological metamaterials: Valley-Hall modes through a bend
Numerical transfer-matrix calculation on graphene ribbons shows Valley Hall modes transmit nearly perfectly through bends irrespective of valley-index conservation.