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

被引：26

作者：

Oshima, Y

Ohta, H

Koyama, K

Motokawa, M

Yamamoto, HM

Kato, R

Tamura, M

Nishio, Y

Kajita, K

机构：

[1] Kobe Univ, Grad Sch Sci & Technol, Kobe, Hyogo 6578501, Japan

[2] Kobe Univ, Mol Photosci Res Ctr, Kobe, Hyogo 6578501, Japan

[3] Tohoku Univ, Inst Mat Res, High Field Lab Supercond Mat, Sendai, Miyagi 9808577, Japan

[4] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

[5] Toho Univ, Fac Sci, Funabashi, Chiba 2748501, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2003年 / 72卷 / 01期

关键词：

magnetooptical measurements; periodic orbit resonance; cyclotron resonance; organic conductor; effective mass; linewidth; Fermi surface; cavity perturbation technique;

D O I：

10.1143/JPSJ.72.143

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 theta-(BEDT-TTF)(2)I-3 and (BEDT-TTF)(3)Br(pBIB), while periodic orbit resonances (POR) were observed for (BEDT-TTF)(2)Br(DIA) and (BEDT-TTF)(3)Cl(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.

引用

页码：143 / 148

页数：6

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