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  Sequential Spin State Transition and Intermetallic Charge Transfer in PbCoO3

Liu, Z., Sakai, Y., Yang, J., Li, W., Liu, Y., Ye, X., et al. (2020). Sequential Spin State Transition and Intermetallic Charge Transfer in PbCoO3. Journal of the American Chemical Society, 142, 5731-5741. doi:10.1021/jacs.9b13508.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-09EA-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-0A2B-0
Genre: Journal Article

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 Creators:
Liu, Zhehong1, Author
Sakai, Yuki1, Author
Yang, Junye1, Author
Li, Wenmin1, Author
Liu, Ying1, Author
Ye, Xubin1, Author
Qin, Shijun1, Author
Chen, Jinming1, Author
Agrestini, Stefano2, Author              
Chen, Kai3, Author              
Liao, Sheng-Chieh3, Author              
Haw, Shu-Chih1, Author
Baudelet, Francois1, Author
Ishii, Hirofumi1, Author
Nishikubo, Takumi1, Author
Ishizaki, Hayato1, Author
Yamamoto, Tatsuru1, Author
Pan, Zhao1, Author
Fukuda, Masayuki1, Author
Ohashi, Kotaro1, Author
Matsuno, Kano1, AuthorMachida, Akihiko1, AuthorWatanuki, Tetsu1, AuthorKawaguchi, Saori I.1, AuthorArevalo-Lopez, Angel M.1, AuthorJin, Changqing1, AuthorHu, Zhiwei4, Author              Attfield, J. Paul1, AuthorAzuma, Masaki1, AuthorLong, Youwen1, Author more..
Affiliations:
1External Organizations, ou_persistent22              
2Stefano Agrestini, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863459              
3Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
4Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461              

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 Abstract: Spin state transitions and intermetallic charge transfers can essentially change material structural and physical properties while excluding external chemical doping. However, these two effects have rarely been found to occur sequentially in a specific material. In this article, we show the realization of these two phenomena in a perovskite oxide PbCoO3 with a simple ABO3 composition under high pressure. PbCoO3 possesses a peculiar A- and B-site ordered charge distribution Pb2+Pb4+3Co2+2Co3+2O12 with insulating behavior at ambient conditions. The high spin Co2+ gradually changes to low spin with increasing pressure up to about 15 GPa, leading to an anomalous increase of resistance magnitude. Between 15 and 30 GPa, the intermetallic charge transfer occurs between Pb4+ and Co2+ cations. The accumulated charge-transfer effect triggers a metal-insulator transition as well as a first-order structural phase transition toward a Tetra.-I phase at the onset of ∼20 GPa near room temperature. On further compression over 30 GPa, the charge transfer completes, giving rise to another first-order structural transformation toward a Tetra.-II phase and the reentrant electrical insulating behavior.

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Language(s): eng - English
 Dates: 2020-02-212020-02-21
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1021/jacs.9b13508
 Degree: -

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Title: Journal of the American Chemical Society
  Other : J. Am. Chem. Soc.
  Abbreviation : JACS
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 142 Sequence Number: - Start / End Page: 5731 - 5741 Identifier: ISSN: 0002-7863
CoNE: https://pure.mpg.de/cone/journals/resource/954925376870