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cond-mat.mtrl-sci2012★ 1 cited
Tuning the vertical location of helical surface states in topological insulator heterostructures via dual-proximity effects
Guangfen Wu, Hua Chen, Yan Sun +6
In integrating topological insulators (TIs) with conventional materials, one crucial issue is how the topological surface states (TSS) will behave in such heterostructures. We use…
cond-mat.mtrl-sci2012★ 1.9k cited
Dirac semimetal and topological phase transitions in A3Bi (A=Na, K, Rb)
Zhijun Wang, Yan Sun, Xingqiu Chen +5
The three-dimensional (3D) Dirac point, where two Weyl points overlap in momentum space, is usually unstable and hard to realize. Here we show, based on the first-principles calcul…