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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
| 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)
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Submitter: 井原 慶彦
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