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      Robust spin-polarized midgap states at step edges of topological crystalline insulators

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          Most cited references 26

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          Colloquium: Topological insulators

           C. L. Kane,  M. Hasan (2010)
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            Topological insulators and superconductors

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              Experimental realization of a three-dimensional topological insulator, Bi2Te3.

              Three-dimensional topological insulators are a new state of quantum matter with a bulk gap and odd number of relativistic Dirac fermions on the surface. By investigating the surface state of Bi2Te3 with angle-resolved photoemission spectroscopy, we demonstrate that the surface state consists of a single nondegenerate Dirac cone. Furthermore, with appropriate hole doping, the Fermi level can be tuned to intersect only the surface states, indicating a full energy gap for the bulk states. Our results establish that Bi2Te3 is a simple model system for the three-dimensional topological insulator with a single Dirac cone on the surface. The large bulk gap of Bi2Te3 also points to promising potential for high-temperature spintronics applications.
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                Author and article information

                Journal
                Science
                Science
                American Association for the Advancement of Science (AAAS)
                0036-8075
                1095-9203
                December 08 2016
                December 09 2016
                December 08 2016
                December 09 2016
                : 354
                : 6317
                : 1269-1273
                10.1126/science.aah6233
                © 2016

                http://www.sciencemag.org/about/science-licenses-journal-article-reuse

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