Analysis of de Haas-van Alphen Oscillations and Band Structure of an Organic Superconductor, θ -(BEDT-TTF)2I3

Masafumi Tamura; Haruo Kuroda; Shinya Uji; Haruyoshi Aoki; Madoka Tokumoto; A. G. Swanson; J. S. Brooks; C. C. Agosta; S. T. Hannahs

doi:10.1143/jpsj.63.615

Analysis of de Haas-van Alphen Oscillations and Band Structure of an Organic Superconductor, θ -(BEDT-TTF)₂I₃

Masafumi Tamura, Haruo Kuroda, Shinya Uji, Haruyoshi Aoki, Madoka Tokumoto, A. G. Swanson, J. S. Brooks, C. C. Agosta, S. T. Hannahs

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Keywords: BEDT-TTF, organic superconductor, de Haas-van Alphen effect, cyclotron mass, magnetic breakdown, Fermi surface

JOURNAL RESTRICTED ACCESS

1994 Volume 63 Issue 2 Pages 615-622

DOI https://doi.org/10.1143/jpsj.63.615

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Abstract

Analysis of the temperature and field dependence of the de Haas-van Alphen oscillations in an organic superconductor θ -(BEDT-TTF)₂I₃ is presented. The cyclotron masses are estimated to be 2.0m_e and 3.6m_e for slow and fast oscillations, respectively. The indication of magnetic breakdown effect is discussed in terms of the geometry of the Fermi surface. The result is compared with those of the infrared reflectance spectra and the empirical tight-binding band calculations.

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