TY  - JOUR
AU  - Yu, Runze
AU  - Hojo, Hajime
AU  - Watanuki, Tetsu
AU  - Mizumaki, Masaichiro
AU  - Mizokawa, Takashi
AU  - Oka, Kengo
AU  - Kim, Hyunjeong
AU  - Machida, Akihiko
AU  - Sakaki, Kouji
AU  - Nakamura, Yumiko
AU  - Agui, Akane
AU  - Mori, Daisuke
AU  - Inaguma, Yoshiyuki
AU  - Schlipf, Martin
AU  - Rushchanskii, Konstantin
AU  - Ležaić, Marjana
AU  - Matsuda, Masaaki
AU  - Ma, Jie
AU  - Calder, Stuart
AU  - Isobe, Masahiko
AU  - Ikuhara, Yuichi
AU  - Azuma, Masaki
TI  - Melting of Pb Charge Glass and Simultaneous Pb–Cr Charge Transfer in PbCrO $_{3}$ as the Origin of Volume Collapse
JO  - Journal of the American Chemical Society
VL  - 137
IS  - 39
SN  - 1520-5126
CY  - Washington, DC
PB  - American Chemical Society
M1  - FZJ-2015-06981
SP  - 12719 - 12728
PY  - 2015
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000362628300046
C6  - pmid:26374486
DO  - DOI:10.1021/jacs.5b08216
UR  - https://juser.fz-juelich.de/record/276653
ER  -