Fermi surface study of quasi-two-dimensional organic conductors by magnetooptical measurements

Magnetooptical measurements of several quasi-two-dimensional (q2D) organic conductors, which have simple Fermi surface structure, have been performed by using a cavity perturbation technique. Despite of the simple Fermi surface structure, magnetooptical resonance results show a dramatic difference f...

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Bibliographic Details
Published in:Journal of the Physical Society of Japan 2003-01, Vol.72 (1), p.143-148
Main Authors: OSHIMA, Yugo, OHTA, Hitoshi, KOYAMA, Keiichi, MOTOKAWA, Mituhiro, YAMAMOTO, Hiroshi M, KATO, Reizo, TAMURA, Masafumi, NISHIO, Yutaka, KAJITA, Koji
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electron states
Exact sciences and technology
Fermi surface: calculations and measurements
effective mass, g factor
Physics
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Summary:Magnetooptical measurements of several quasi-two-dimensional (q2D) organic conductors, which have simple Fermi surface structure, have been performed by using a cavity perturbation technique. Despite of the simple Fermi surface structure, magnetooptical resonance results show a dramatic difference for each sample. Cyclotron resonances (CR) were observed for θ-(BEDT-TTF)2I3 and (BEDT-TTF)3Br(pBIB), while periodic orbit resonances (POR) were observed for (BEDT-TTF)2Br(DIA) and (BEDT-TTF)3Cl(DFBIB). The selection of the resonance seems to correspond with the skin depth for each sample. The effective mass of POR seems to have a mass enhancement due to the many-body effect, while effective mass of CR is independent of the strength of the electron-electron interaction. The scattering time deduced from each resonance's linewidth will be also presented.
ISSN:0031-9015
1347-4073
DOI:10.1143/jpsj.72.143