SELF-ENERGIES OF INFRARED-ACTIVE PHONONS IN RBA2CU3O7-DELTA

被引：49

作者：

LITVINCHUK, AP

THOMSEN, C

CARDONA, M

机构：

[1] Max-Planck-Institit für Festköperforschung, D-7000 Stuttgart 80

来源：

SOLID STATE COMMUNICATIONS | 1991年 / 80卷 / 04期

关键词：

D O I：

10.1016/0038-1098(91)90019-R

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report the results of infrared-reflectivity investigations of RBa2Cu3O7-delta superconductor ceramics (R = Er, Tm, Dy, Y). The temperature dependences of infrared-phonon frequencies, linewidths and oscillator strengths are compared to those of the non-superconducting PrBa2Cu3O7-delta. Analysis of the experimental data on phonon self-energies within a strong-coupling theory yielded the electron-phonon coupling constants of the B1u(z)-symmetry vibrations-lambda = 0.01 (per phonon branch).

引用

页码：257 / 262

页数：6

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