Superconductivity and Majorana Fermions in Doped Topological Insulators(Research)

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Other Title
  • ドープしたトポロジカル絶縁体における超伝導とマヨラナ粒子(最近の研究から)
  • 最近の研究から ドープしたトポロジカル絶縁体における超伝導とマヨラナ粒子
  • サイキン ノ ケンキュウ カラ ドープ シタ トポロジカル ゼツエンタイ ニ オケル チョウデンドウ ト マヨラナ リュウシ

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Abstract

Doped topological insulators show a variety of superconductivity including topological ones due to their peculiar electronic states and orbital degrees of freedom. We find a transition of energy dispersion of surface Andreev bound states on topological insulators, i.e., Lifshitz transition. This causes anomalous enhancement of tunneling conductance in junction of a normal metal and superconducting topological insulator, which suggests that a recent discovered superconducting topological insulator Cu_xBi_2Se_3 is a three-dimensional topological superconductor.

Journal

  • Butsuri

    Butsuri 70 (5), 356-361, 2015-05-05

    The Physical Society of Japan

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