PHONON RAMAN-SPECTROSCOPY OF SUPERCONDUCTING BI2SR2CACU2O8+DELTA SINGLE-CRYSTALS

被引：49

作者：

BOEKHOLT, M

ERLE, A

SPLITTGERBERHUNNEKES, PC

GUNTHERODT, G

机构：

[1] 2. Physikalisches Institut, RWTH Aachen, 5100 Aachen

来源：

SOLID STATE COMMUNICATIONS | 1990年 / 74卷 / 10期

关键词：

D O I：

10.1016/0038-1098(90)90720-V

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report unpolarized and polarized Raman spectra on the ab- and bc-planes of a Bi2Sr2CaCu2O8+δ single crystal. While most phonons have Ag- symmetry, one mode with B1g-symmetry is detected at 275 cm-1. For the phonons at 463 cm-1 and 650 cm-1, the temperature dependence of the frequency and the linewidth is measured in the temperature range from 5 K up to room temperature. We find a softening of the frequency of the 463-cm-1 (T = 295 K) mode below Tc and assign this mode to the out-of-plane in-phase vibration of the oxygen in the CuO2-layers. © 1990.

引用

页码：1107 / 1112

页数：6

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