Journal Article

FZJ-2015-06981

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Melting of Pb Charge Glass and Simultaneous Pb–Cr Charge Transfer in PbCrO $_{3}$ as the Origin of Volume Collapse

Yu, R. (Corresponding author) ; Hojo, H. ; Watanuki, T. ; Mizumaki, M. ; Mizokawa, T. ; Oka, K. ; Kim, H. ; Machida, A. ; Sakaki, K. ; Nakamura, Y. ; Agui, A. ; Mori, D. ; Inaguma, Y. ; Schlipf, M. ; Rushchanskii, K.FZJ* ; Ležaić, M.FZJ* ; Matsuda, M. ; Ma, J. ; Calder, S. ; Isobe, M. ; Ikuhara, Y. ; Azuma, M.

2015
American Chemical Society Washington, DC

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Please use a persistent id in citations: doi:10.1021/jacs.5b08216

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 Pb2+0.5Pb4+0.5Cr3+O3 with Pb2+–Pb4+ 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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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IAS-1)
2. Quanten-Theorie der Materialien (PGI-1)
3. JARA-FIT (JARA-FIT)

Research Program(s):

1. 142 - Controlling Spin-Based Phenomena (POF3-142) (POF3-142)

Appears in the scientific report 2015

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Database coverage:
; BIOSIS Previews ; Current Contents - Life Sciences ; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 10 ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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