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

doi:10.1103/PhysRevB.60.6296

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

Physics

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

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 language	English (US)
Pages (from-to)	6296-6299
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	60
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.60.6296
State	Published - 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

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

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 60, No. 9, 1999, p. 6296-6299.

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

Zuo, F, Su, X, Zhang, P, Brooks, JS, Wosnitza, J, Schlueter, JA, Williams, JM, Nixon, PG, Winter, RW & Gard, GL 1999, 'Anomalous low-temperature and high-field magnetoresistance in the organic superconductor γ″-(BEDT-TTF)₂SF₅CH₂CF₂SO₃', Physical Review B - Condensed Matter and Materials Physics, vol. 60, no. 9, pp. 6296-6299. https://doi.org/10.1103/PhysRevB.60.6296

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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.",

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AB - 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.

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

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