Anomalous low-temperature and high-field magnetoresistance in the organic superconductor β″-(BEDT-TTF)2SF5CH2CF2SO3

Authors

F. ZuoFollow
X. SuFollow
P. Zhang
J. S. Brooks
J. WosnitzaFollow
J. A. SchlueterFollow
Jack M. WilliamsFollow
P. G. NixonFollow
Rolf Walter Winter, Portland State UniversityFollow
Gary L. Gard, Portland State University

Sponsor

This work was supported in part by NSF Grant No. DMR-9623306 and the Petroleum Research Fund ACS-PRF 33812-AC. Work performed at the National High Magnetic Field Laboratory was supported by the NSF, the state of Florida, and the U.S. Department of Energy. Work at Argonne National laboratory was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences, under Contract No. W-31-109-ENG- 38. Work at Portland State University was supported by NSF Grant No. CHE-9632815 and the Petroleum Research Fund No. ACS-PRF 31099-AC1.

Published In

Physical Review B

Document Type

Article

Publication Date

9-1-1999

Subjects

Organic superconductors, Magnetoresistance

Abstract

We report direct observations of anomalous magnetic-field and temperature dependences of the Shubnikov–de Haas oscillations in the organic superconductor β″-(BEDT-TTF)₂SF₅CH₂CF₂SO₃. Unlike other BEDT-TTF based organic superconductors, a nonmetallic temperature dependence of the background magnetoresistance is clearly observed. It is speculated that the nonmetallic behavior may arise from a partial nesting of the open orbits, similar to the field-induced density wave in the quasi-one-dimensional systems or a charge localization. The analysis of the magnetoresistance oscillations are found to deviate from the conventional Lifshitz-Kosevich description at high field and low temperatures. [S0163-1829(99)05433-8]

Description

Article appears in Physical Review B (http://prb.aps.org/) and is copyrighted by APS Journals (http://publish.aps.org/). The paper can be found at the following URL: http://link.aps.org/doi/10.1103/PhysRevB.60.6296

DOI

/10.1103/PhysRevB.60.6296

Persistent Identifier

http://archives.pdx.edu/ds/psu/7346

Citation Details

Zuo, F., Su, X., Zhang, P., Brooks, J. S., Wosnitza, J., Schlueter, J. A., Williams, Jack M., Nixon, P. G., Winter, R. W., Gard, G. L. (1999). Anomalous low-temperature and high-field magnetoresistance in the organic superconductor β″-(BEDT-TTF)₂SF₅CH₂CF₂SO₃. Physical Review B., 60 6296.