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

Y. Oshima·H. Ohta·K. Koyama·M. Motokawa·H. M. Yamamoto·R. Kato·M. Tamura·Y. Nishio·K. Kajita
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Abstract

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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Y. Oshima, H. Ohta, K. Koyama, M. Motokawa, H. M. Yamamoto, R. Kato, M. Tamura, Y. Nishio, K. Kajita. 2002-11-11. Fermi Surface Study of Quasi-Two-Dimensional Organic Conductors by Magnetooptical Measurements. https://doi.org/10.1143/jpsj.72.143

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