Advanced search

Filter By:

Journal Check one or more journals to show results from those journals only.

Choose more journals

Article type Check one or more article types to show results from those article types only.
Subject Check one or more subjects to show results from those subjects only.
Date Choose a date option to show results from those dates only.

Custom date range

Clear all filters
Sort by:
Showing 1–4 of 4 results
Advanced filters: Author: "Y Ando" Clear advanced filters

  • A topologically protected state can exist at the interface between a topological insulator and an ordinary insulator. Here, the authors use photoemission spectroscopy to show that the topological Dirac-cone state migrates from the surface of the topological insulator TlBiSe2to an attached bismuth film.

    • T. Shoman
    • A. Takayama
    • Yoichi Ando
    Research
    Nature Communications
    Volume: 6, P: 1-6

  • High-temperature copper oxide superconductors are usually doped with holes or electrons, not both. The discovery of a material that can be doped with both electrons and holes finally clarifies the region of low doping and the effect of the added dopants.

    • Kouji Segawa
    • M. Kofu
    • Yoichi Ando
    Research
    Nature Physics
    Volume: 6, P: 579-583

  • Time-reversal symmetry makes massless Dirac fermions in topological insulators ‘gapless’. When a gap opens, it breaks this symmetry and confers mass to the fermions. But now a quantum phase transition has been observed in a three-dimensional topological insulator that allows these particles to acquire mass without symmetry breaking.

    • T. Sato
    • Kouji Segawa
    • T. Takahashi
    Research
    Nature Physics
    Volume: 7, P: 840-844

  • A topological insulator has surface metallic states that are topologically protected by time-reversal symmetry. Tin telluride is now shown to be a ‘topological crystalline insulator’, in which the surface metallic state is instead protected by the mirror symmetry of the crystal.

    • Y. Tanaka
    • Zhi Ren
    • Yoichi Ando
    Research
    Nature Physics
    Volume: 8, P: 800-803