Study of Electronic and Magnetic States Probed by X-Ray Absorption Spectroscopy under High Pressure

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  • KAWAMURA Naomi
    Research & Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI/SPring-8)

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  • 高圧力下でのX線吸収分光法による電子状態・磁気状態の研究
  • コウアツリョク カ デ ノ Xセン キュウシュウ ブンコウホウ ニ ヨル デンシ ジョウタイ ・ ジキ ジョウタイ ノ ケンキュウ

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X-ray absorption spectroscopy including X-ray magnetic circular dichroism is a useful tool to obtain information of the electronic states and local structure for target elements. Pressure is one of the important thermodynamic parameters so as to observe physical interests of magnetic materials such as metal-insulator transition, magneto-volume effects, and quantum criticality phenomena. In addition, the X-ray absorption spectroscopy under extremely high pressure above 100 GPa is an effective method because the sample volume is too small to perform macroscopic measurements. In this paper, the recent technical methods for X-ray absorption spectroscopy under high pressure are presented, and recent topics for high-pressure research are reviewed.<br>

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