SYSTEMATICS OF MAGNETIC PENETRATION DEPTHS IN YBA2CU4O8 AND Y2BA4CU7O15-DELTA

被引：2

作者：

ANSALDO, EJ

NIEDERMAYER, C

TALLON, JL

POOKE, DM

BREWER, JH

MORRIS, GD

KREITZMANN, SR

机构：

[1] TRIUMF,VANCOUVER V6T 2A3,BC,CANADA

[2] UNIV CONSTANCE,W-7750 CONSTANCE,GERMANY

[3] DSIR,LOWER HUTT,NEW ZEALAND

[4] UNIV BRITISH COLUMBIA,VANCOUVER V6T 2A3,BC,CANADA

来源：

PHYSICA C | 1991年 / 185卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/0921-4534(91)91007-Q

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetic penetration depth lambda(T) was determined by means of positive-muon spin rotation and relaxation for YBa2Cu4O8 and Y2Ba4Cu7O15-delta samples with T(c)'s from 46 to 91 K. The extrapolated (T --> 0) spin relaxation rate (sigma-0 is-proportional-to lambda(0)-2 is-proportional-to n(s)/m* for the superconducting condensate) increases almost linearly with T(c), similar to the linear increase previously found in YBa2Cu3Ox. Within the framework of models based on condensation of local pairs, the data indicate that the double-chain ribbons play a more active role in the superconductivity than as mere charge reservoirs.

引用

页码：1763 / 1764

页数：2

共 22 条

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[22]

UEMURA YJ, 1991, PHYSICA C, V185

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