Fermi Surface Study of Quasi-Two-Dimensional Organic Conductors by Magnetooptical Measurements

Details Fermi Surface Study of Quasi-Two-Dimensional Organic Conductors by Magnetooptical Measurements Fermi Surface Study of Quasi-Two-Dimensional Organic Conductors by Magnetooptical Measurements

2002-11-11

arxiv.org/abs/cond-mat/0211194v1

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages, 8 figures, to be published to J. Phys. Soc. Jpn Vol.72 No.1 (accepted)

Scientific paper

10.1143/JPSJ.72.143

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 q-(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.

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