Orbital angular momentum textures in perovskite oxide materials

ORAL

Abstract

We measured electronic structures of perovskite oxide materials Sr$_{2}$MO$_{4}$ (M$=$Rh, Ru, Ir) with angle-resolved photoemission spectroscopy using circular dichroism (CD) method to investigate orbital characters. We observe large CD which shows complicated orbital structures of Sr$_{2}$MO$_{4}$. CD signal comes from obital angular momentum induced from inversion symmetry breaking at cleaved surfaces. We compare results from various orbitals of 3-, 4- and 5-d.

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Authors

  • Wonsig Jung

    • Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749, Korea

  • Wonsig Kyung

    • Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749, Korea

  • Yoonyoung Koh

    • Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749, Korea

  • Yoshiyuki Yoshida

    • National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan

  • Y.J. choi

    • Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749, Korea

  • Masashi Arita

    • Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-0046, Japan

  • Kenya Shimada

    • Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-0046, Japan

  • C. Kim

    • Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749, Korea