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Landau quantization and the thickness limit of topological insulator thin films of Sb2Te3
Yeping Jiang, Yilin Wang, Mu Chen +7
We report the experimental observation of Landau quantization of molecular beam epitaxy grown Sb2Te3 thin films by a low-temperature scanning tunneling microscope. Different from a…
Fermi Level Tuning of Epitaxial Sb2Te3 Thin Films on Graphene by Regulating Intrinsic Defects and Substrate Transfer Doping
Yeping Jiang, Y. Y. Sun, Mu Chen +9
High-quality Sb2Te3 films are obtained by molecular beam epitaxy on graphene substrate and investigated by in situ scanning tunneling microscopy/spectroscopy. Intrinsic defects res…
Carrier-independent ferromagnetism and giant anomalous Hall effect in magnetic topological insulator
Cui-Zu Chang, Jin-Song Zhang, Min-Hao Liu +13
Breaking the time-reversal symmetry of a topological insulator (TI) by ferromagnetism can induce exotic magnetoelectric phenomena such as quantized anomalous Hall (QAH) effect. Exp…
Band structure engineering in (Bi1-xSbx)2Te3 ternary topological insulators
Jinsong Zhang, Cui-Zu Chang, Zuocheng Zhang +10
Three-dimensional (3D) topological insulators (TI) are novel quantum materials with insulating bulk and topologically protected metallic surfaces with Dirac-like band structure. Th…
Crossover between weak localization and weak antilocalization in magnetically doped topological insulator
Minhao Liu Jinsong Zhang, Cui-Zu Chang, Zuocheng Zhang +10
Topological insulators (TI) are a new class of quantum materials with insulating bulk enclosed by topologically protected metallic boundaries. The surface states of three-dimension…