Optical response of the spin-density-wave ground state

被引：12
|
作者：
Dressel, M
Degiorgi, L
Brinckmann, J
Schwartz, A
Gruner, G
机构：
[1] UNIV CALIF LOS ANGELES,DEPT PHYS,LOS ANGELES,CA 90095
[2] ETH ZURICH,FESTKORPERPHYS LAB,CH-8093 ZURICH,SWITZERLAND
来源：
PHYSICA B | 1997年 / 230卷
关键词：
one-dimensional systems; electrodynamic response; optical properties; spin density wave; (TMTSF)(2)PF6;
D O I：
10.1016/S0921-4526(96)00790-9
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We investigated the electrodynamical properties of(TMTSF)(2)PF6 in an extremely wide frequency range from 0.1 to 10(5) cm(-1). While there are no indications of the single-particle gap for the electric field parallel to a by passing through the transition at T-SDW = 12 K, we observe clear signatures of the spin-density-wave gap at 2 Delta approximate to 70 cm(-1) in the direction perpendicular to the chains. We are able to describe the experimental findings with a semi-phenomenological model, starting from mean-field theory. The temperature dependence of the order parameter is extracted.
引用
收藏
页码：1008 / 1010
页数：3
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