FAR-INFRARED MAGNETOOPTICS OF HIGH-T(C) SUPERCONDUCTORS

被引：13
|
作者：
DREW, HD
CHOI, E
KARRAI, K
机构：
[1] LAB PHYS SCI,COLL PK,MD 20740
[2] TECHN UNIV MUNCHEN,WALTER SCHOTTKY INST,D-85748 GARCHING,GERMANY
来源：
PHYSICA B | 1994年 / 197卷 / 1-4期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0921-4526(94)90265-8
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Measurements in polarized light have shown optical activity consistent with cyclotron resonance of the hole system in superconducting YBa2Cu3O7 with a cyclotron mass of (3.1 +/- 0.5)m(e). The optical activity is quenched at low frequencies (omega less than or similar to 40 cm-1). In unpolarized light a resonance is observed at omega congruent-to 65 cm-1 which is attributed to the vortex core resonance. This feature is non-chiral. The results are compared with the optical conductivity based on a microscopic theory of vortex dynamics by T. Hsu. The theory successfully describes the optical activity but it cannot explain the magnitude or nonchirality of the vortex resonance. Possible mechanisms for the observed resonance are discussed.
引用
收藏
页码：624 / 631
页数：8
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