Topological Surface States with Persistent High Spin Polarization across Dirac Point in Bi$_{2}$Te$_{2}$Se and Bi$_{2}$Se$_{2}$Te

K. Miyamoto; A. Kimura; T. Okuda; H. Miyahara; K. Kuroda; H. Namatame; M. Taniguchi; S. V. Eremeev; T. V. Menshchikova; E. V. Chulkov; K. A. Kokh; O. E. Tereshchenko

doi:10.1103/PhysRevLett.109.166802

Topological Surface States with Persistent High Spin Polarization across Dirac Point in Bi$_{2}$Te$_{2}$Se and Bi$_{2}$Se$_{2}$Te

Mesoscale and Nanoscale Physics 2015-06-04 v1

Authors: K. Miyamoto , A. Kimura , T. Okuda , H. Miyahara , K. Kuroda , H. Namatame , M. Taniguchi , S. V. Eremeev , T. V. Menshchikova , E. V. Chulkov , K. A. Kokh , O. E. Tereshchenko

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Abstract

Helical spin textures with the marked spin polarizations of topological surface states have been firstly unveiled by the state-of-the-art spin- and angle-resolved photoemission spectroscopy for two promising topological insulators Bi $_2$ Te $_2$ Se and Bi $_2$ Se $_2$ Te. The highly spin-polarized natures are found to be persistent across the Dirac point in both compounds. This novel finding paves a pathway to extending their utilization of topological surface state for future spintronic applications.

Keywords

topological surface states spin polarization Dirac point topological insulators Bi2Te2Se Bi2Se2Te spintronics spin-ARPES

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@article{arxiv.1203.4439,
  title  = {Topological Surface States with Persistent High Spin Polarization across Dirac Point in Bi$_{2}$Te$_{2}$Se and Bi$_{2}$Se$_{2}$Te},
  author = {K. Miyamoto and A. Kimura and T. Okuda and H. Miyahara and K. Kuroda and H. Namatame and M. Taniguchi and S. V. Eremeev and T. V. Menshchikova and E. V. Chulkov and K. A. Kokh and O. E. Tereshchenko},
  journal= {arXiv preprint arXiv:1203.4439},
  year   = {2015}
}

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5 pages, 3 figures

Topological Surface States with Persistent High Spin Polarization across Dirac Point in Bi$_{2}$Te$_{2}$Se and Bi$_{2}$Se$_{2}$Te

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