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C-13 NMR study of the charge-ordered state near the superconducting transition in the organic superconductor β"-(BEDT-TTF)(4)[(H3O)Ga(C2O4)(3)]⋅C6H5NO2

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/57650

Title: C-13 NMR study of the charge-ordered state near the superconducting transition in the organic superconductor β"-(BEDT-TTF)(4)[(H3O)Ga(C2O4)(3)]⋅C6H5NO2
Authors: Ihara, Y. Browse this author →KAKEN DB
Jeong, M. Browse this author
Mayaffre, H. Browse this author
Berthier, C. Browse this author
Horvatic, M. Browse this author
Seki, H. Browse this author
Kawamoto, A. Browse this author
Issue Date: 22-Sep-2014
Publisher: American Physical Society
Journal Title: Physical review B
Volume: 90
Issue: 12
Start Page: 121106
Publisher DOI: 10.1103/PhysRevB.90.121106
Abstract: The charge-ordered state in a quasi-two-dimensional organic superconductor β"-(BEDT-TTF)(4)[(H3O)Ga(C2O4) 3]⋅C6H5NO2 has been investigated using C-13 NMR spectroscopy in a high magnetic field. Enhanced resolution of the high-field spectrum allows us to estimate the site charges in the low-temperature charge-ordered state below 8.5 K. The observed strong increase in the charge imbalance suggests that superconductivity appears on the electronic state with a strong charge modulation. From the NMR intensity ratio of signals from the charge-rich and charge-poor sites, we discuss a possible charge pattern with threefold modulation, which could be stabilized by the effects of electron-electron correlations.
Rights: ©2014 American Physical Society
Type: article
URI: http://hdl.handle.net/2115/57650
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 井原 慶彦

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