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Large out-of-plane spin polarization in a spin-splitting one-dimensional metallic surface state on Si(557)-Au

Taichi Okuda, Koji Miyamoto, Yasuo Takeichi, Hirokazu Miyahara, Manami Ogawa, Ayumi Harasawa, Akio Kimura, Iwao Matsuda, Akito Kakizaki, Tatsuya Shishidou, and Tamio Oguchi
Phys. Rev. B 82, 161410(R) – Published 15 October 2010
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    Abstract

    We report evidence of a spin-split one-dimensional metallic surface state for the system of Si(557)-Au obtained by means of spin- and angle-resolved photoelectron spectroscopy. Strikingly, considerably large out-of-plane spin polarization which is locked to one specific direction has been observed which is in good agreement with the one-dimensional Rashba spin-splitting surface states caused by the highly anisotropic wave function of the gold chains predicted by first-principles calculation.

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    • Received 5 September 2010

    DOI:https://doi.org/10.1103/PhysRevB.82.161410

    ©2010 American Physical Society

    Authors & Affiliations

    Taichi Okuda1,*, Koji Miyamoto1, Yasuo Takeichi2, Hirokazu Miyahara3, Manami Ogawa2, Ayumi Harasawa2, Akio Kimura3, Iwao Matsuda2, Akito Kakizaki2, Tatsuya Shishidou4,5, and Tamio Oguchi4,5

    • 1Hiroshima Synchrotron Radiation Center (HSRC), Hiroshima University, 2-313 Kagamiyama, Higashi-Hiroshima 739-0046, Japan
    • 2The Institute for Solid State Physics (ISSP), The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa 277-8581, Japan
    • 3Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
    • 4Department of Quantum Matter, ADSM, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8530, Japan
    • 5ADSM&IAMR, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8530, Japan

    • *okudat@hiroshima-u.ac.jp

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    Issue

    Vol. 82, Iss. 16 — 15 October 2010

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