High-magnetic-field X-ray absorption spectroscopy of field-induced valence transition in EuNi2(Si1-xGe[x])2
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- Matsuda Yasuhiro H.
- Institute for Materials Research, Tohoku University PRESTO, Japan Science and Technology Agency
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- Inami Toshiya
- Synchrotron Radiation Research Unit, Japan Atomic Energy Agency
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- Ohwada Kenji
- Synchrotron Radiation Research Unit, Japan Atomic Energy Agency
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- Murata Yuto
- Graduate School of Natural Science and Technology, Okayama University
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- Nojiri Hiroyuki
- Institute for Materials Research, Tohoku University
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- Murakami Youichi
- Graduate School of Science, Tohoku University
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- Mitsuda Akihiro
- Department of Physics, Kyushu University
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- Wada Hirofumi
- Department of Physics, Kyushu University
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- Miyazaki Hiroshi
- Graduate School of Natural Science and Technology, Okayama University
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- Harada Isao
- Graduate School of Natural Science and Technology, Okayama University
書誌事項
- タイトル別名
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- High-Magnetic-Field X-ray Absorption Spectroscopy of Field-Induced Valence Transition in EuNi<SUB>2</SUB>(Si<SUB>1−<I>x</I></SUB>Ge<I><SUB>x</SUB></I>)<SUB>2</SUB>
- High-Magnetic-Field X-ray Absorption Spectroscopy of Field-Induced Valence Transition in EuNi<sub>2</sub>(Si<sub>1-<i>x</i></sub>Ge<sub><i>x</i></sub>)<sub>2</sub>
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抄録
The magnetic-field-induced valence transition in EuNi2(Si1−xGex)2 (x=0.82, 0.85) has been studied by X-ray absorption spectroscopy at low temperatures. The field dependence of the Eu valence is directly observed for the first time. We find a significant decrease in the valences at high magnetic fields above 40 T. The valence of Eu changes from v*=2.75 at a zero field to v*=2.33 at 40 T for x=0.82. The results are analyzed using a theoretical model. The hybridization parameter V between the Eu2+ and Eu3+ states and the energy separation ΔE are determined, which are crucial for quantum mechanical mixing.
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 77 (5), 054713-054713, 2008
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
- 1390001204197912960
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- NII論文ID
- 130005436453
- 110006666013
- 210000107247
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- NII書誌ID
- AA00704814
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 9489372
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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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- 使用不可