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Persistence of Topological Order and Formation of Quantum Well States in Topological Insulators Bi2(Se,Te)3 under Ambient Conditions
Chaoyu Chen, Shaolong He, Hongming Weng +23
The topological insulators represent a unique state of matter where the bulk is insulating with an energy gap while the surface is metallic with a Dirac cone protected by the time…
Chern semi-metal and Quantized Anomalous Hall Effect in HgCr2Se4
Gang Xu, Hongming Weng, Zhijun Wang +2
In three dimensional (3D) momentum space of solid crystal, a topological phase boundary separating the Chern insulating layers from normal insulating layers may exist, where the ga…
Half-metallic Surface States and Topological Superconductivity in NaCoO from first principles
Hongming Weng, Gang Xu, Haijun Zhang +3
Based on first-principles calculations, we predict a half-metallic surface state in layered bulk insulator NaCoO2, with tunable surface hole concentration. The half-metallic surfac…
Topological Aspect and Quantum Magnetoresistance of -AgTe
Wei Zhang, Rui Yu, Wanxiang Feng +4
To explain the unusual non-saturating linear magnetoresistance observed in silver chalcogenides, the quantum scenario has been proposed based on the assumption of gapless linear en…