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Melting of Pb Charge Glass and Simultaneous Pb-Cr Charge Transfer in PbCrO3 as the Origin of Volume Collapse.
Yu, Runze; Hojo, Hajime; Watanuki, Tetsu; Mizumaki, Masaichiro; Mizokawa, Takashi; Oka, Kengo; Kim, Hyunjeong; Machida, Akihiko; Sakaki, Kouji; Nakamura, Yumiko; Agui, Akane; Mori, Daisuke; Inaguma, Yoshiyuki; Schlipf, Martin; Rushchanskii, Konstantin Z; Lezaic, Marjana; Matsuda, Masaaki; Ma, Jie; Calder, Stuart; Isobe, Masahiko; Ikuhara, Yuichi; Azuma, Masaki.
Affiliation
  • Yu R; Materials and Structures Laboratory, Tokyo Institute of Technology , 4259 Nagatsuta, Midori, Yokohama, 226-8503, Japan.
  • Hojo H; Materials and Structures Laboratory, Tokyo Institute of Technology , 4259 Nagatsuta, Midori, Yokohama, 226-8503, Japan.
  • Watanuki T; Quantum Beam Science Center, Japan Atomic Energy Agency , Sayo, Hyogo 679-5148, Japan.
  • Mizumaki M; Japan Synchrotron Radiation Research Institute , Sayo, Hyogo 679-5198, Japan.
  • Mizokawa T; Department of Complexity Science and Engineering, University of Tokyo , Kashiwa, Chiba 277-8561, Japan.
  • Oka K; Materials and Structures Laboratory, Tokyo Institute of Technology , 4259 Nagatsuta, Midori, Yokohama, 226-8503, Japan.
  • Kim H; National Institute of Advanced Industrial Science and Technology , Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
  • Machida A; Quantum Beam Science Center, Japan Atomic Energy Agency , Sayo, Hyogo 679-5148, Japan.
  • Sakaki K; National Institute of Advanced Industrial Science and Technology , Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
  • Nakamura Y; National Institute of Advanced Industrial Science and Technology , Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
  • Agui A; Quantum Beam Science Center, Japan Atomic Energy Agency , Sayo, Hyogo 679-5148, Japan.
  • Mori D; Department of Chemistry, Faculty of Science, Gakushuin University , 1-5-1 Mejiro, Toshima, Tokyo 171-8588, Japan.
  • Inaguma Y; Department of Chemistry, Faculty of Science, Gakushuin University , 1-5-1 Mejiro, Toshima, Tokyo 171-8588, Japan.
  • Schlipf M; Peter Grünberg Institut, Forschungszentrum Jülich and JARA , Jülich 52425, Germany.
  • Rushchanskii KZ; Peter Grünberg Institut, Forschungszentrum Jülich and JARA , Jülich 52425, Germany.
  • Lezaic M; Peter Grünberg Institut, Forschungszentrum Jülich and JARA , Jülich 52425, Germany.
  • Matsuda M; Quantum Condensed Matter Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.
  • Ma J; Quantum Condensed Matter Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.
  • Calder S; Quantum Condensed Matter Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.
  • Isobe M; Institute for Solid State Physics, University of Tokyo , Chiba 277-8581, Japan.
  • Ikuhara Y; Institute of Engineering Innovation, University of Tokyo , Bunkyo, Tokyo 113-8656, Japan.
  • Azuma M; Materials and Structures Laboratory, Tokyo Institute of Technology , 4259 Nagatsuta, Midori, Yokohama, 226-8503, Japan.
J Am Chem Soc ; 137(39): 12719-28, 2015 Oct 07.
Article in En | MEDLINE | ID: mdl-26374486
ABSTRACT
A metal to insulator transition in integer or half integer charge systems can be regarded as crystallization of charges. The insulating state tends to have a glassy nature when randomness or geometrical frustration exists. We report that the charge glass state is realized in a perovskite compound PbCrO3, which has been known for almost 50 years, without any obvious inhomogeneity or triangular arrangement in the charge system. PbCrO3 has a valence state of Pb(2+)(0.5)Pb(4+)(0.5)Cr(3+)O3 with Pb(2+)-Pb(4+) correlation length of three lattice-spacings at ambient condition. A pressure induced melting of charge glass and simultaneous Pb-Cr charge transfer causes an insulator to metal transition and ∼10% volume collapse.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: J Am Chem Soc Year: 2015 Document type: Article Affiliation country: Japón
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: J Am Chem Soc Year: 2015 Document type: Article Affiliation country: Japón