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

F. Zuo, X. Su, P. Zhang, J. S. Brooks, J. Wosnitza, J. A. Schlueter, Jack M. Williams, P. G. Nixon, R. W. Winter, G. L. Gard

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26 Scopus citations

Abstract

We report direct observations of anomalous magnetic-field and temperature dependences of the Shubnikov–de Haas oscillations in the organic superconductor γ″-(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.

Original languageEnglish (US)
Pages (from-to)6296-6299
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume60
Issue number9
DOIs
StatePublished - 1999

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Zuo, F., Su, X., Zhang, P., Brooks, J. S., Wosnitza, J., Schlueter, J. A., Williams, J. M., Nixon, P. G., Winter, R. W., & Gard, G. L. (1999). Anomalous low-temperature and high-field magnetoresistance in the organic superconductor γ″-(BEDT-TTF)2SF5CH2CF2SO3. Physical Review B - Condensed Matter and Materials Physics, 60(9), 6296-6299. https://doi.org/10.1103/PhysRevB.60.6296