A-B PLANE ANISOTROPY OF THE SUPERCONDUCTING GAP IN BI2SR2CACU2O8+DELTA

被引：74

作者：

KENDZIORA, C

ROSENBERG, A

机构：

[1] Naval Research Laboratory, Washington

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.52.R9867

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a-b plane electronic Raman scattering (ERS) measurements of superconducting Bi2Sr2CaCu2O8+delta single crystals with T(c)s ranging from 90 K down to 65 K on both sides of the doping curve. At low temperatures, a peak associated with the opening of a superconducting energy gap Delta(k) forms in the electronic Raman continuum. Polarization selection rules yield ERS sensitivity to k dependence and a clear anisotropy is observed. As the doping level is varied, anomalies in the observed continuum peak positions indicate that scattering in the B-1g symmetry is not a direct probe of Delta(k).

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页码：R9867 / R9870

页数：4

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