Soft X-ray Core-Level Photoemission Study of Boron Sites in Heavily Boron-Doped Diamond Films
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- Okazaki Hiroyuki
- The Graduate School of Natural Science and Technology, Okayama University
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- Yoshida Rikiya
- The Graduate School of Natural Science and Technology, Okayama University
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- Muro Takayuki
- Japan Synchrotron Radiation Research Institute (JASRI)/SPring-8
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- Wakita Takanori
- Research Laboratory for Surface Science, Okayama University
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- Hirai Masaaki
- Research Laboratory for Surface Science, Okayama University
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- Muraoka Yuji
- Research Laboratory for Surface Science, Okayama University JST, CREST
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- Takano Yoshihiko
- National Institute for Materials Science
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- Iriyama Shingo
- School of Science and Engineering, Waseda University
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- Kawarada Hiroshi
- School of Science and Engineering, Waseda University
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- Oguchi Tamio
- Department of Quantum Matter, Graduate school of Advanced Sciences of Matter, Hiroshima University
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- Yokoya Takayoshi
- Research Laboratory for Surface Science, Okayama University JST, CREST
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抄録
We have performed high-resolution soft x-ray B 1s core-level photoemission spectroscopy of heavily boron-doped diamond films in order to study the chemical sites of doped-boron atoms and their relation to the superconducting transition temperature (Tc). We find that B 1s core-level spectra exhibit several fine structures and three bulk components can be resolved from photon energy dependent studies and spectral fittings. These results indicate existence of several chemical environments of doped-boron atoms. One of the bulk components having the lowest binding energy can be assigned to a signal from substitutionally doped-boron atoms. Comparisons of bulk components with Tc suggest spectroscopic evidence for the importance of substitutionally doped-boron atoms for effective carrier and superconductivity.
収録刊行物
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 78 (3), 034703-034703, 2009
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390282679173210624
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- NII論文ID
- 130005437311
- 110007138874
- 210000107712
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- NII書誌ID
- AA00704814
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 10183097
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- KAKEN
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