Fermi surface study of organic conductors using a magneto-optical measurement under high magnetic fields

M. Kimata, H. Ohta, K. Koyama, M. Motokawa, R. Kondo, S. Kagoshima, H. Tanaka, M. Tokumoto, H. Kobayashi, A. Kobayashi

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Abstract

Magneto-optical measurements have been performed in organic conductors β′′-(BEDT-TTF)2CsCd(SCN)4 and λ-(BETS)2FeCl4. Although the zero magnetic field ground state of β′′-(BEDT-TTF)2CsCd(SCN) 4is considered as the density wave state, periodic orbit resonances (POR's) attributed to quasi-one-dimensional (Q1D) and quasi-two-dimensional (Q2D) Fermi surfaces (FS's) have been observed above 6 T. The existence of these FS's are predicted by the band calculation based on room temperature lattice parameters. This result may suggest the destruction of the density wave state at 6 T, and the primal metallic state revives in the high field phase above 6 T. In the case of λ-(BETS)2FeCl4, large changes of the transmission intensity of electromagnetic waves around 10 T, which correspond to the insulator-metal transition, have been observed. However, no POR-like resonance has been observed. This may be due to the restriction of the observed frequency-field region.

Original languageEnglish
Article number084
Pages (from-to)359-362
Number of pages4
JournalJournal of Physics: Conference Series
Volume51
Issue number1
DOIs
Publication statusPublished - Dec 1 2006

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Kimata, M., Ohta, H., Koyama, K., Motokawa, M., Kondo, R., Kagoshima, S., Tanaka, H., Tokumoto, M., Kobayashi, H., & Kobayashi, A. (2006). Fermi surface study of organic conductors using a magneto-optical measurement under high magnetic fields. Journal of Physics: Conference Series, 51(1), 359-362. [084]. https://doi.org/10.1088/1742-6596/51/1/084