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Title: Conduction-band electronic states of YbInCu{sub 4} studied by photoemission and soft x-ray absorption spectroscopies

Abstract

We have studied conduction-band (CB) electronic states of a typical valence-transition compound YbInCu{sub 4} by means of temperature-dependent hard x-ray photoemission spectroscopy (HX-PES) of the Cu 2p{sub 3/2} and In 3d{sub 5/2} core states taken at h{nu}=5.95 keV, soft x-ray absorption spectroscopy (XAS) of the Cu 2p{sub 3/2} core absorption region around h{nu}{approx}935 eV, and soft x-ray photoemission spectroscopy (SX-PES) of the valence band at the Cu 2p{sub 3/2} absorption edge of h{nu}=933.0 eV. With decreasing temperature below the valence transition at T{sub V}=42 K, we have found that (1) the Cu 2p{sub 3/2} and In 3d{sub 5/2} peaks in the HX-PES spectra exhibit the energy shift toward the lower binding-energy side by {approx}40 and {approx}30 meV, respectively, (2) an energy position of the Cu 2p{sub 3/2} main absorption peak in the XAS spectrum is shifted toward higher photon-energy side by {approx}100 meV, with an appearance of a shoulder structure below the Cu 2p{sub 3/2} main absorption peak, and (3) an intensity of the Cu L{sub 3}VV Auger spectrum is abruptly enhanced. These experimental results suggest that the Fermi level of the CB-derived density of states is shifted toward the lower binding-energy side. We have described the valence transition inmore » YbInCu{sub 4} in terms of the charge transfer from the CB to Yb 4f states.« less

Authors:
; ; ;  [1]; ; ;  [2];  [3];  [4]; ; ; ;  [5];  [6]; ; ; ;  [7];  [8];  [1] more »;  [9] « less
  1. Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526 (Japan)
  2. Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima 739-0046 (Japan)
  3. Graduate School of Science and Engineering, Ehime University, Matsuyama 790-8577 (Japan)
  4. Graduate School of Integrated Arts and Sciences, Hiroshima University, Higashi-Hiroshima 739-8521 (Japan)
  5. Synchrotron Radiation Research Center, Japan Atomic Energy Agency, Hyogo 679-5148 (Japan)
  6. Graduate School of Engineering, Osaka Prefecture University, Sakai 599-8531 (Japan)
  7. NIMS Beamline Station at SPring-8, National Institute for Materials Science, Hyogo 679-5148 (Japan)
  8. ISIR, Osaka University, Ibaraki 567-0047 (Japan)
  9. (Japan)
Publication Date:
OSTI Identifier:
21596871
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 84; Journal Issue: 11; Other Information: DOI: 10.1103/PhysRevB.84.115143; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1098-0121
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; ABSORPTION SPECTROSCOPY; AUGER ELECTRON SPECTROSCOPY; BINDING ENERGY; COPPER COMPOUNDS; DENSITY; ELECTRONIC STRUCTURE; ENERGY-LEVEL TRANSITIONS; FERMI LEVEL; HARD X RADIATION; INDIUM COMPOUNDS; PHOTOEMISSION; PHOTONS; SOFT X RADIATION; SPECTRA; TEMPERATURE DEPENDENCE; X-RAY SPECTROSCOPY; YTTERBIUM COMPOUNDS; BOSONS; ELECTROMAGNETIC RADIATION; ELECTRON SPECTROSCOPY; ELEMENTARY PARTICLES; EMISSION; ENERGY; ENERGY LEVELS; IONIZING RADIATIONS; MASSLESS PARTICLES; PHYSICAL PROPERTIES; RADIATIONS; RARE EARTH COMPOUNDS; SECONDARY EMISSION; SORPTION; SPECTROSCOPY; TRANSITION ELEMENT COMPOUNDS; X RADIATION

Citation Formats

Utsumi, Yuki, Kurihara, Hidenao, Maso, Hiroyuki, Tobimatsu, Komei, Sato, Hitoshi, Shimada, Kenya, Namatame, Hirofumi, Hiraoka, Koichi, Kojima, Kenichi, Ohkochi, Takuo, Fujimori, Shin-ichi, Takeda, Yukiharu, Saitoh, Yuji, Mimura, Kojiro, Ueda, Shigenori, Yamashita, Yoshiyuki, Yoshikawa, Hideki, Kobayashi, Keisuke, Oguchi, Tamio, Taniguchi, Masaki, and Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima 739-0046. Conduction-band electronic states of YbInCu{sub 4} studied by photoemission and soft x-ray absorption spectroscopies. United States: N. p., 2011. Web. doi:10.1103/PHYSREVB.84.115143.
Utsumi, Yuki, Kurihara, Hidenao, Maso, Hiroyuki, Tobimatsu, Komei, Sato, Hitoshi, Shimada, Kenya, Namatame, Hirofumi, Hiraoka, Koichi, Kojima, Kenichi, Ohkochi, Takuo, Fujimori, Shin-ichi, Takeda, Yukiharu, Saitoh, Yuji, Mimura, Kojiro, Ueda, Shigenori, Yamashita, Yoshiyuki, Yoshikawa, Hideki, Kobayashi, Keisuke, Oguchi, Tamio, Taniguchi, Masaki, & Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima 739-0046. Conduction-band electronic states of YbInCu{sub 4} studied by photoemission and soft x-ray absorption spectroscopies. United States. doi:10.1103/PHYSREVB.84.115143.
Utsumi, Yuki, Kurihara, Hidenao, Maso, Hiroyuki, Tobimatsu, Komei, Sato, Hitoshi, Shimada, Kenya, Namatame, Hirofumi, Hiraoka, Koichi, Kojima, Kenichi, Ohkochi, Takuo, Fujimori, Shin-ichi, Takeda, Yukiharu, Saitoh, Yuji, Mimura, Kojiro, Ueda, Shigenori, Yamashita, Yoshiyuki, Yoshikawa, Hideki, Kobayashi, Keisuke, Oguchi, Tamio, Taniguchi, Masaki, and Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima 739-0046. Thu . "Conduction-band electronic states of YbInCu{sub 4} studied by photoemission and soft x-ray absorption spectroscopies". United States. doi:10.1103/PHYSREVB.84.115143.
@article{osti_21596871,
title = {Conduction-band electronic states of YbInCu{sub 4} studied by photoemission and soft x-ray absorption spectroscopies},
author = {Utsumi, Yuki and Kurihara, Hidenao and Maso, Hiroyuki and Tobimatsu, Komei and Sato, Hitoshi and Shimada, Kenya and Namatame, Hirofumi and Hiraoka, Koichi and Kojima, Kenichi and Ohkochi, Takuo and Fujimori, Shin-ichi and Takeda, Yukiharu and Saitoh, Yuji and Mimura, Kojiro and Ueda, Shigenori and Yamashita, Yoshiyuki and Yoshikawa, Hideki and Kobayashi, Keisuke and Oguchi, Tamio and Taniguchi, Masaki and Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima 739-0046},
abstractNote = {We have studied conduction-band (CB) electronic states of a typical valence-transition compound YbInCu{sub 4} by means of temperature-dependent hard x-ray photoemission spectroscopy (HX-PES) of the Cu 2p{sub 3/2} and In 3d{sub 5/2} core states taken at h{nu}=5.95 keV, soft x-ray absorption spectroscopy (XAS) of the Cu 2p{sub 3/2} core absorption region around h{nu}{approx}935 eV, and soft x-ray photoemission spectroscopy (SX-PES) of the valence band at the Cu 2p{sub 3/2} absorption edge of h{nu}=933.0 eV. With decreasing temperature below the valence transition at T{sub V}=42 K, we have found that (1) the Cu 2p{sub 3/2} and In 3d{sub 5/2} peaks in the HX-PES spectra exhibit the energy shift toward the lower binding-energy side by {approx}40 and {approx}30 meV, respectively, (2) an energy position of the Cu 2p{sub 3/2} main absorption peak in the XAS spectrum is shifted toward higher photon-energy side by {approx}100 meV, with an appearance of a shoulder structure below the Cu 2p{sub 3/2} main absorption peak, and (3) an intensity of the Cu L{sub 3}VV Auger spectrum is abruptly enhanced. These experimental results suggest that the Fermi level of the CB-derived density of states is shifted toward the lower binding-energy side. We have described the valence transition in YbInCu{sub 4} in terms of the charge transfer from the CB to Yb 4f states.},
doi = {10.1103/PHYSREVB.84.115143},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 11,
volume = 84,
place = {United States},
year = {2011},
month = {9}
}