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Bulk-sensitive spectroscopic studies on noncentrosymmetric superconducting system of Mg–Ir–B |
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| Authors: | R. Yoshida H. Okazaki K. Iwai K. Noami T. Muro M. Okawa K. Ishizaka S. Shin Z. Li J.L. Luo G.-Q. Zheng T. Oguchi M. Hirai Y. Muraoka T. Yokoya |
| Affiliation: | 1. The Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan;2. Japan Synchrotron Radiation Research Institute (JASRI)/SPring-8, Sayo, Hyogo 679-5198, Japan;3. Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan;4. The Institute of Physical and Chemical Research (RIKEN), Sayo, Hyogo 679-5143, Japan;5. Institute of Physics, Chinese Academy of Sciences, Beijing 100080, PR China;6. Department of Quantum Matter, Graduate School of Advanced Sciences of Matter (ADSM), Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8530, Japan;7. Research Laboratory for Surface Science (RLSS), Okayama University, Okayama 700-8530, Japan;8. JST, CREST, Okayama 700-8530, Japan |
| Abstract: | We present the data from ultrahigh-resolution laser-excited photoemission spectroscopy on a newly discovered noncentrosymmetric superconductor Mg10Ir19B16. We observed the evidences for the opening of superconducting gap where numerical fittings show that isotropic s-wave model can satisfactorily explain the behavior of spectra near the Fermi level. We also present the valence band photoemission spectrum and B K fluorescence spectrum to discuss the basic electronic structure of Mg10Ir19B16. |
| Keywords: | Mg10Ir19B16 Laser photoemission spectroscopy Soft X-ray emission spectroscopy Electronic structure |
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