ANISOTROPIES OF RAMAN-SCATTERING CROSS-SECTIONS OF YBA2CU3O6+DELTA COMPOUNDS

被引：6

作者：

BRAITHWAITE, D

LIU, JQ

MARTINEZ, G

VANBENTUM, PJM

LEJAY, P

机构：

[1] CATHOLIC UNIV NIJMEGEN, 6525 ED NIJMEGEN, NETHERLANDS

[2] CNRS, CRTBT, F-38042 GRENOBLE, FRANCE

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1991年 / 177卷 / 1-3期

关键词：

D O I：

10.1016/0921-4534(91)90320-X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present Raman scattering results on superconducting single crystals of YBa2Cu3O6 + delta for delta greater-than-or-equal-to 0.5 at temperatures below and above the critical temperature. A complete polarization analysis of these crystals allows us to deduce the cross-sections of the Raman active phonon modes in the three crystallographic directions. The electronic Raman scattering of A(g) symmetry and with the polarization vector in the a-b-plane reveals an energy gap 2-DELTA of 3.3 to 3.6-kappa-B(T)c for crystals with delta greater-than-or-equal-to 0.8. No clear gap is found in B1g symmetry or for polarizations parallel to the c-axis.

引用

页码：213 / 222

页数：10

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