Journal ArticleDOI
Topological insulator nanostructures
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In this article, the authors review the recent progress made in topological insulator nanostructures including chemical and physical synthesis techniques, notable transport experiments, and current efforts to protect the surface states from degradation.Abstract:
Topological insulators provide a gateway to investigate fundamental quantum behaviours of exotic quasi-particles as well as the promise to revolutionize modern technology. This is due to their unique surface states that are robust against time reversal perturbation and exhibit unique spin-momentum locking property. Enhancing the surface state signal in proportion to the bulk of the material is critical to study the surface states and for future electronics applications. This can be achieved by making topological insulators into nanostructures, which have large surface to volume ratios thus maximizing the topological surface state signal. This article reviews the recent progress made in topological insulator nanostructures including chemical and physical synthesis techniques to make topological insulator nanostructures, notable transport experiments, and current efforts to protect the surface states from degradation. Lastly, future transport studies using topological insulator nanostructures and various chemical methods to tune their materials properties for diverse electronic applications are suggested. (© 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)read more
Citations
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Alternative Plasmonic Materials: Beyond Gold and Silver
TL;DR: This review explores different material classes for plasmonic and metamaterial applications, such as conventional semiconductors, transparent conducting oxides, perovskiteOxides, metal nitrides, silicides, germanides, and 2D materials such as graphene.
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Broadband photodetectors based on graphene-Bi2Te3 heterostructure.
Hong Qiao,Jianyu Yuan,Zai-Quan Xu,Caiyun Chen,Shenghuang Lin,Shenghuang Lin,Yusheng Wang,Jingchao Song,Yan Liu,Qasim Khan,Huiying Hoh,Chun-Xu Pan,Shaojuan Li,Qiaoliang Bao,Qiaoliang Bao +14 more
TL;DR: In this article, the growth of the graphene-Bi2Te3 heterostructure is reported, where Bi2Te is a small bandgap material from topological insulator family with a similar hexagonal symmetry to graphene.
Journal Article
Manifestation of topological protection in transport properties of epitaxial Bi$_2$Se$_3$ thin films
TL;DR: A systematic evolution of the surface conductance as a function of thickness is revealed and a striking manifestation of the topological protection is found: the metallic surface transport abruptly diminishes below the critical thickness of ~6 nm, at which an energy gap opens in the surface state and the Dirac fermions become massive.
Electrically tunable surface-to-bulk coherent coupling in topological insulator thin films
TL;DR: In this article, the authors studied coherent electronic transport in charge-density-tunable microdevices patterned from thin films of the topological insulator (TI) Bi${}_{2}$Se${}_3}$.
Journal ArticleDOI
Structure, energetics, and electronic states of III-V compound polytypes
Friedhelm Bechstedt,A. Belabbes +1 more
TL;DR: A unified picture of the III-V polytypes and their heterocrystalline structures is developed and several contradictory results in the literature are developed.
References
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Journal ArticleDOI
Electric Field Effect in Atomically Thin Carbon Films
Kostya S. Novoselov,Andre K. Geim,Sergey V. Morozov,Da Jiang,Y. Zhang,S. V. Dubonos,Irina V. Grigorieva,A. A. Firsov +7 more
TL;DR: Monocrystalline graphitic films are found to be a two-dimensional semimetal with a tiny overlap between valence and conductance bands and they exhibit a strong ambipolar electric field effect.
Journal ArticleDOI
Colloquium: Topological insulators
M. Z. Hasan,Charles L. Kane +1 more
TL;DR: In this paper, the theoretical foundation for topological insulators and superconductors is reviewed and recent experiments are described in which the signatures of topologically insulators have been observed.
Journal ArticleDOI
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
Two-dimensional atomic crystals
Kostya S. Novoselov,Da Jiang,Fred Schedin,Timothy J. Booth,V. V. Khotkevich,Sergey V. Morozov,Andre K. Geim +6 more
TL;DR: By using micromechanical cleavage, a variety of 2D crystals including single layers of boron nitride, graphite, several dichalcogenides, and complex oxides are prepared and studied.