Crossover of the three-dimensional topological insulator Bi 2 Se 3 to the two-dimensional limit
Yi Zhang,Ke He,Cui-Zu Chang,Cui-Zu Chang,Can-Li Song,Lili Wang,Xi Chen,Jin-Feng Jia,Zhong Fang,Xi Dai,Wen-Yu Shan,Shun-Qing Shen,Qian Niu,Xiao-Liang Qi,Shou-Cheng Zhang,Xucun Ma,Qi-Kun Xue +16 more
TLDR
In this article, a study of the topological insulating Bi2Se3 thin films finds that a gap in these gapless surface states opens up in films below a certain thickness, which suggests that in thicker films, gapless states exist on both upper and lower surfaces.Abstract:
The gapless surface states of topological insulators could enable quantitatively different types of electronic device. A study of the topological insulating Bi2Se3 thin films finds that a gap in these states opens up in films below a certain thickness. This in turn suggests that in thicker films, gapless states exist on both upper and lower surfaces.read more
Citations
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Topological insulators and superconductors
Xiao-Liang Qi,Shou-Cheng Zhang +1 more
TL;DR: Topological superconductors are new states of quantum matter which cannot be adiabatically connected to conventional insulators and semiconductors and are characterized by a full insulating gap in the bulk and gapless edge or surface states which are protected by time reversal symmetry.
Journal ArticleDOI
Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
Cui-Zu Chang,Cui-Zu Chang,Jinsong Zhang,Xiao Feng,Xiao Feng,Jie Shen,Zuocheng Zhang,Minghua Guo,Kang Li,Yunbo Ou,Pang Wei,Lili Wang,Zhong Qing Ji,Yang Feng,Shuai-Hua Ji,Xi Chen,Jin-Feng Jia,Xi Dai,Zhong Fang,Shou-Cheng Zhang,Ke He,Yayu Wang,Li Lu,Xucun Ma,Qi-Kun Xue +24 more
TL;DR: The observation of the quantum anomalous Hall (QAH) effect in thin films of chromium-doped (Bi,Sb)2Te3, a magnetic topological insulator shows a plateau in the Hall resistance as a function of the gating voltage without any applied magnetic fields, signifying the achievement of the QAH state.
Journal ArticleDOI
Weyl semimetal in a topological insulator multilayer.
TL;DR: In this paper, a simple realization of the 3D Weyl semimetal phase was proposed, utilizing a multilayer structure, composed of identical thin films of a magnetically doped 3D topological insulator, separated by ordinary-insulator spacer layers.
Journal ArticleDOI
Topological Insulator Materials
TL;DR: Topological insulators represent a new quantum state of matter which is characterized by peculiar edge or surface states that show up due to a topological character of the bulk wave functions.
Journal ArticleDOI
Colloquium : Topological band theory
Arun Bansil,Hsin Lin,Tanmoy Das +2 more
TL;DR: In this paper, the authors discuss the underpinnings of the topological band theory and its materials applications, and propose a framework for predicting new classes of topological materials.
References
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TL;DR: Spintronics, or spin electronics, involves the study of active control and manipulation of spin degrees of freedom in solid-state systems as discussed by the authors, where the primary focus is on the basic physical principles underlying the generation of carrier spin polarization, spin dynamics, and spin-polarized transport.
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Topological insulators in Bi2Se3, Bi2Te3 and Sb2Te3 with a single Dirac cone on the surface
TL;DR: In this article, first-principles electronic structure calculations of the layered, stoichiometric crystals Sb2Te3, Bi2Se3, SbSe3 and BiSe3 were performed.
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TL;DR: In this article, the authors describe the mathematical underpinnings of topological quantum computation and the physics of the subject are addressed, using the ''ensuremath{
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Markus König,Steffen Wiedmann,Steffen Wiedmann,Christoph Brüne,Christoph Brüne,Andreas Roth,Andreas Roth,Hartmut Buhmann,Hartmut Buhmann,Laurens W. Molenkamp,Laurens W. Molenkamp,Xiao-Liang Qi,Xiao-Liang Qi,Shou-Cheng Zhang,Shou-Cheng Zhang +14 more
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