MEASUREMENTS OF THE ANISOTROPY AND TEMPERATURE-DEPENDENCE OF THE INPLANE ENERGY-GAP IN YBA2CU3O7-DELTA USING ANDREEV REFLECTIONS

被引：29

作者：

POLTURAK, E ^{[1
]}

KOREN, G ^{[1
]}

COHEN, D ^{[1
]}

AHARONI, E ^{[1
]}

机构：

[1] TECHNION ISRAEL INST TECHNOL,CROWN CTR SUPERCOND,IL-32000 HAIFA,ISRAEL

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.47.5270

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report measurements of the differential resistance of (YBa2Cu3O7-delta)-normal-metal-(YBa2Cu3O7-delta) edge Josephson junctions. We interpret the observed features as arising from Andreev reflections, and deduce the temperature dependence and the anisotropy of the in-plane energy gap. We find 2DELTA(b)/kT(c) = 4.2 and 2DELTA(a)/kT(c) = 6.2. In addition, we discuss features at eV > 2DELTA, which appear at harmonics of the gap, and which we interpret as arising from the presence of correlated phase-slip centers near the junction.

引用

页码：5270 / 5274

页数：5

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