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

Y. Ihara; Minki Jeong; H. Mayaffre; C. Berthier; M. Horvatić; H. Seki; A. Kawamoto

doi:10.1103/PhysRevB.90.121106

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

Y. Ihara
, Minki Jeong
, H. Mayaffre
, C. Berthier
, M. Horvatić
, H. Seki
, A. Kawamoto

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

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 ¹³C
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.

Original language	English
Article number	121106(R)
Number of pages	5
Journal	Physical Review B
Volume	90
DOIs	https://doi.org/10.1103/PhysRevB.90.121106
Publication status	Published - 22 Sept 2014

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title = "13C NMR study of the charge-ordered state near the superconducting transition in the organic superconductor Β''-(BEDT-TTF)4[(H3O)Ga(C2O4)3]·C6H5NO2",

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 13C 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.",

author = "Y. Ihara and Minki Jeong and H. Mayaffre and C. Berthier and M. Horvati{\'c} and H. Seki and A. Kawamoto",

year = "2014",

month = sep,

day = "22",

doi = "10.1103/PhysRevB.90.121106",

language = "English",

volume = "90",

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T1 - 13C NMR study of the charge-ordered state near the superconducting transition in the organic superconductor Β''-(BEDT-TTF)4[(H3O)Ga(C2O4)3]·C6H5NO2

AU - Ihara, Y.

AU - Jeong, Minki

AU - Mayaffre, H.

AU - Berthier, C.

AU - Horvatić, M.

AU - Seki, H.

AU - Kawamoto, A.

PY - 2014/9/22

Y1 - 2014/9/22

N2 - The charge-ordered state in a quasi-two-dimensional organic superconductor Β''-(BEDT-TTF)4[(H3O)Ga(C2O4)3]·C6H5NO2 has been investigated using 13C 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.

AB - The charge-ordered state in a quasi-two-dimensional organic superconductor Β''-(BEDT-TTF)4[(H3O)Ga(C2O4)3]·C6H5NO2 has been investigated using 13C 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.

UR - https://journals.aps.org/prb/abstract/10.1103/PhysRevB.90.121106

U2 - 10.1103/PhysRevB.90.121106

DO - 10.1103/PhysRevB.90.121106

M3 - Article

SN - 1098-0121

VL - 90

JO - Physical Review B

JF - Physical Review B

M1 - 121106(R)

ER -

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

Abstract

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