ANOMALOUS BEHAVIOR OF PHONONS IN SUPERCONDUCTING TL2BA2CA2CU3O10 DETECTED BY FAR-INFRARED SPECTROSCOPY

被引：46

作者：

ZETTERER, T

FRANZ, M

SCHUTZMANN, J

OSE, W

OTTO, HH

RENK, KF

机构：

[1] Fakultät F̈r Physik, Universität Regensburg

来源：

PHYSICAL REVIEW B | 1990年 / 41卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.41.9499

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report anomalous behavior of phonons in superconducting Tl2Ba2Ca2Cu3O10 at Tc(112 K) detected by a far-infrared reflectivity study of a ceramic sample. Our results indicate strong and abrupt softening of an infrared-active phonon and a decrease of oscillator strength of this and of another phonon. We associate the effects with anomalous vibrations of the bridging oxygen in the BaO layers and the off-center oxygen in the TlO layers, respectively. Our results give experimental evidence for strong electron-phonon interaction. © 1990 The American Physical Society.

引用

页码：9499 / 9502

页数：4

共 23 条

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