Anomalies of the infrared-active phonons in underdoped YBa2Cu3Oy as evidence for the intra-bilayer Josephson effect

被引：74

作者：

Munzar, D

Bernhard, C

Golnik, A

Humlícek, J

Cardona, M

机构：

[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

[2] Masaryk Univ, Fac Sci, Dept Solid State Phys, CZ-61137 Brno, Czech Republic

[3] Masaryk Univ, Fac Sci, Lab Thin Films & Nanostruct, CZ-61137 Brno, Czech Republic

[4] Univ Warsaw, IFD, PL-00681 Warsaw, Poland

来源：

SOLID STATE COMMUNICATIONS | 1999年 / 112卷 / 07期

关键词：

high-T-c superconductors; dielectric response; phonons; light absorption and reflection;

D O I：

10.1016/S0038-1098(99)00377-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The spectra of the far-infrared c-axis conductivity of underdoped YBCO crystals exhibit dramatic changes of some of the phonon peaks when going from the normal to the superconducting state. We show that the most striking of these anomalies can be naturally explained by changes of the local fields acting on the ions arising from the onset of inter- and intra-bilayer Josephson effects. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：365 / 369

页数：5