Magneto-optical studies of low-dimensional organic conductors

Hitoshi Ohta; Kimata Motoi; Yugo Oshima

doi:10.1088/1468-6996/10/2/024310

Magneto-optical studies of low-dimensional organic conductors

Sci Technol Adv Mater. 2009 Jul 6;10(2):024310. doi: 10.1088/1468-6996/10/2/024310. eCollection 2009 Apr.

Authors

Hitoshi Ohta¹, Kimata Motoi², Yugo Oshima³

Affiliations

¹ Molecular Photoscience Research Center, Kobe University, 1-1 Rokkodai-cho, Nada, Kobe 657-8501, Japan.
² Graduate School of Science and Technology, Kobe University, 1-1 Rokkodai-cho, Nada, Kobe 657-8501, Japan.
³ Institute for Materials Research, Tohoku University, Katahira, Sendai 980-8577, Japan.

Abstract

Our periodic orbit resonance (POR) results on quasi-two-dimensional (q2D), highly anisotropic q2D and quasi-one-dimensional (q1D) organic conductors are reviewed together with our rotational cavity magneto-optical measurement system. Higher order POR up to seventh order has been observed in the q2D system (BEDT-TTF)₂Br(DIA), and the experimental conditions to observe POR and the cyclotron resonance (CR) are discussed. Highly anisotropic q2D Fermi surface (FS) in β″-(BEDT-TTF)(TCNQ), which was considered to have q1D FS previously, is proposed by our POR measurements, and the possible interpretations of other experimental results of β″-(BEDT-TTF)(TCNQ) are discussed assuming the highly anisotropic q2D FS. Finally, detailed q1D FS of (DMET)₂I₃, obtained from our POR results, is discussed in connection with the typical q1D system (TMTSF)₂ClO₄.

Keywords: Fermi surface; low-dimensional organic conductors; magneto-optical measurements; periodic orbit resonance.

Publication types

Review