TEMPERATURE-DEPENDENCE OF THE MAGNETIC PENETRATION DEPTH IN YBA2CU3O6.95

被引：4

作者：

KIEFL, RF ^{[1
]}

SONIER, J ^{[1
]}

BONN, DA ^{[1
]}

BREWER, JH ^{[1
]}

CAROLAN, JF ^{[1
]}

CHOW, KH ^{[1
]}

DOSANJH, P ^{[1
]}

HARDY, WN ^{[1
]}

LIANG, RX ^{[1
]}

MACFARLANE, WA ^{[1
]}

MENDELS, P ^{[1
]}

MORRIS, GD ^{[1
]}

RISEMAN, TM ^{[1
]}

SCHNEIDER, JW ^{[1
]}

机构：

[1] UNIV BRITISH COLUMBIA,DEPT PHYS,VANCOUVER V6T 2A3,BC,CANADA

来源：

HYPERFINE INTERACTIONS | 1994年 / 86卷 / 1-4期

关键词：

D O I：

10.1007/BF02068944

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

We report precision transverse field muSR measurements of the internal field distribution in the vortex state of crystalline YBa2Cu3O6.95. A novel low background apparatus was used to study a mosaic sample of three high quality single crystals (T(c)=93.3K). The observed frequency spectra in magnetic fields of 5kG and 15 kG applied along the c-axis have the characteristic features expected for a regular vortex lattice with some additional broadening. From a preliminary analysis we find that [lambda(0)/lambda(T)]2 has a linear temperature coefficient for T < 30 K. Such a term is inconsistent with simple s-wave pairing in the superconducting state. These results support recent microwave measurements of lambda(T) on similar crystals in zero applied field but differ significantly from previous muSR reports on sintered powders and crystals with lower T(c).

引用

页码：537 / 542

页数：6

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