INVESTIGATION OF THE SUPERCONDUCTING ORDER PARAMETER IN BI2SR2CACU2O8 SINGLE-CRYSTALS

被引：121

作者：

STAUFER, T

NEMETSCHEK, R

HACKL, R

MULLER, P

VEITH, H

机构：

[1] Walther-Meissner-Institut F̈r Tieftemperaturforshung, W-8046 Garching

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.68.1069

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Single crystals of Bi2Sr2CaCu2O8+delta with different oxygen concentrations were investigated by Raman scattering. Dependent on the polarizations of the incident and the scattered light, the electronic spectra measured well below T(c) show either zero or finite intensity at small energy transfers. In oxygen-annealed crystals, the superconducting order parameter-DELTA is temperature dependent. In contrast, DELTA is almost constant in the essentially two-dimensional argon-annealed samples.

引用

页码：1069 / 1072

页数：4

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