Angle-dependent evolution of the Fulde-Ferrell-Larkin-Ovchinnikov state in an organic superconductor.
Abstract
We report magnetic-field and angular-dependent high-resolution specific-heat measurements of the organic superconductor {beta}{double_prime}-(BEDT-TTF){sub 2}SF{sub 5}CH{sub 2}CF{sub 2}SO{sub 3}. When the magnetic field is aligned precisely within the conducting BEDT-TTF layer, at low temperatures a clear upturn of the upper critical field beyond the Pauli limit of 9.73 T is observed, hinting at the emergence of a Fulde-Ferrell-Larkin-Ovchinnikov state. This upturn disappears when the field is oriented out of plane by more than {approx}0.5 deg. For smaller out-of-plane angles, the specific-heat anomaly at T{sub c} sharpens and a second peaky phase transition appears within the superconducting state.
- Authors:
-
- Materials Science Division
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1050181
- Report Number(s):
- ANL/MSD/JA-72661
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US201218%%534
- DOE Contract Number:
- DE-AC02-06CH11357
- Resource Type:
- Journal Article
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 109; Journal Issue: 2; Journal ID: ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- ENGLISH
- Subject:
- 36 MATERIALS SCIENCE; BEDT-TTF; CRITICAL FIELD; MAGNETIC FIELDS; ORGANIC SUPERCONDUCTORS; SPECIFIC HEAT
Citation Formats
Beyer, R, Bergk, B, Schlueter, J A, Wosnitza, J, and Hochfeld-Magnetlabor Dresden). Angle-dependent evolution of the Fulde-Ferrell-Larkin-Ovchinnikov state in an organic superconductor.. United States: N. p., 2012.
Web. doi:10.1103/PhysRevLett.109.027003.
Beyer, R, Bergk, B, Schlueter, J A, Wosnitza, J, & Hochfeld-Magnetlabor Dresden). Angle-dependent evolution of the Fulde-Ferrell-Larkin-Ovchinnikov state in an organic superconductor.. United States. https://doi.org/10.1103/PhysRevLett.109.027003
Beyer, R, Bergk, B, Schlueter, J A, Wosnitza, J, and Hochfeld-Magnetlabor Dresden). 2012.
"Angle-dependent evolution of the Fulde-Ferrell-Larkin-Ovchinnikov state in an organic superconductor.". United States. https://doi.org/10.1103/PhysRevLett.109.027003.
@article{osti_1050181,
title = {Angle-dependent evolution of the Fulde-Ferrell-Larkin-Ovchinnikov state in an organic superconductor.},
author = {Beyer, R and Bergk, B and Schlueter, J A and Wosnitza, J and Hochfeld-Magnetlabor Dresden)},
abstractNote = {We report magnetic-field and angular-dependent high-resolution specific-heat measurements of the organic superconductor {beta}{double_prime}-(BEDT-TTF){sub 2}SF{sub 5}CH{sub 2}CF{sub 2}SO{sub 3}. When the magnetic field is aligned precisely within the conducting BEDT-TTF layer, at low temperatures a clear upturn of the upper critical field beyond the Pauli limit of 9.73 T is observed, hinting at the emergence of a Fulde-Ferrell-Larkin-Ovchinnikov state. This upturn disappears when the field is oriented out of plane by more than {approx}0.5 deg. For smaller out-of-plane angles, the specific-heat anomaly at T{sub c} sharpens and a second peaky phase transition appears within the superconducting state.},
doi = {10.1103/PhysRevLett.109.027003},
url = {https://www.osti.gov/biblio/1050181},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 2,
volume = 109,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2012},
month = {Sun Jan 01 00:00:00 EST 2012}
}
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