Photoelectron Spectroscopy of LiV2O4 with Photons from 8.4 to 8100 eV: Bulk Sensitivity, Hybridization, and Recoil Effects

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概要

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• Hard- and soft-X-ray photoelectron spectroscopies (HAXPES and SXPES) are very powerful for studying the bulk electronic structures of strongly correlated electron systems. The presence of an intrinsic surface layer on clean fractured surfaces is demonstrated for LiV2O4. In this material, single-nucleus recoil effects are very prominent not only for all core levels but also for valence states at 20 K. However, such recoil effects are negligible in VO2 even at 350 K in spite of the fact that VO2 has a similar V–O6 octahedron structure. The marked intensity increase in the high-binding-energy part of the so-called O 2p band relative to the V 3d band in HAXPES is interpreted to be due to the V 4s state contribution. Very high resolution extremely low energy photoelectron spectroscopy (ELEPES) is performed with Kr and Xe lamps at 10.1 and 8.4 eV, respectively, demonstrating its bulk sensitivity for this material with heavy-Fermion-like behavior.

• 2010-04-15

著者

• TAMASAKU Kenji

  SPring-8/Riken

• HIGASHIYA Atsushi

  SPring-8/Riken

• ISHIKAWA Tetsuya

  SPring-8/Riken

• Sekiyama Akira

  Graduate School Of Engineering Science Osaka University

• Yamaguchi Jun-ichi

  Graduate School Of Engineering Science Osaka University

• Suga Shigemasa

  Graduate School Of Engineering Science Osaka University

• TAKAGI Hidenori

  RIKEN

• Niitaka Seiji

  Riken (the Institute Of Physical And Chemical Research):crest Japan Science And Technology Agency (j

• KIMURA Masato

  Graduate School of Mathematics, Kyushu University

• Fujiwara Hidenori

  Graduate School Of Engineering Science Osaka University

• Tamasaku Kenji

  SPring-8/Riken, 1-1-1 Koto, Sayo, Hyogo 679-8148, Japan

• Yabashi Makina

  SPring-8/Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Koto, Sayo, Hyogo 679-5198, Japan

• Yabashi Makina

  SPring-8/Riken, 1-1-1 Koto, Sayo, Hyogo 679-8148, Japan

• Higashiya Atsushi

  SPring-8/Riken, 1-1-1 Koto, Sayo, Hyogo 679-8148, Japan

• Nakatsu Yasutaka

  Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan

• Murakami Keita

  Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan

• Nekrasov Igor

  Institute of Electrophysics, UB RAS, Ekaterinburg, Amundsena Str. 106, 620016, Russia

• Kimura Masato

  Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan

• Ishikawa Tetsuya

  SPring-8/Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Koto, Sayo, Hyogo 679-5198, Japan

• Niitaka Seiji

  RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan

• Niitaka Seiji

  RIKEN (The Institute of Physical and Chemical Research), Wako, Saitama 351-0198

• Takagi Hidenori

  RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan

• Yamaguchi Jun-ichi

  Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan

• Niitaka Seiji

  RIKEN

• YABASHI Makina

  SPring-8, Japan Synchrotron Radiation Research Institute (JASRI)

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