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cond-mat.mes-hall2008★ 432 cited
Helical Metal Inside a Topological Band Insulator
Ying Ran, Yi Zhang, Ashvin Vishwanath
Topological defects, such as domain walls and vortices, have long fascinated physicists. A novel twist is added in quantum systems like the B-phase of superfluid helium He, whe…
cond-mat.mes-hall2008★ 115 cited
Spin-charge Separated Solitons in a Topological Band Insulator
Ying Ran, Ashvin Vishwanath, Dung-Hai Lee
In this paper we construct a simple, controllable, two dimensional model based on a topological band insulator. It has many attractive properties. (1) We obtain spin-charge separat…