Electric-field effect on transport and superconducting properties of YBa2Cu3O7-x

被引：6

作者：

Kawahara, T ^{[1
]}

Suzuki, T ^{[1
]}

Komai, E ^{[1
]}

Nakazawa, K ^{[1
]}

Terashima, T ^{[1
]}

Bando, Y ^{[1
]}

机构：

[1] KYOTO UNIV,INST CHEM RES,UJI 611,JAPAN

来源：

PHYSICA C | 1996年 / 266卷 / 1-2期

关键词：

thin films; electric resistivity; flux pinning; applications of high-T-c superconductors; hole concentration;

D O I：

10.1016/0921-4534(96)00308-5

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Charging effects on the transport properties of thin YBa2Cu3O7-x (YBCO) films are measured using FET-like junctions of YBCO in thickness ranging from 1 to 10 unit-cell thicknesses (UCT's). An electric (E) field experiment without magnetic field reveals that the conductance is divergent at finite temperatures and changes of the Kosterlitz-Thouless transition temperature are observed as a function of applied E field. Under magnetic fields, the temperature dependence of the resistance under E fields is of Arrhenius type, and E field effects on the pinning energy of vortex are evaluated. These changes of the superconducting properties are linearly correlated to those of the normal resistance, namely, the induced areal carrier densities.

引用

页码：149 / 156

页数：8

共 50 条

[1] ELECTRIC-FIELD GRADIENT CALCULATIONS FOR YBA2CU3O7-X
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[2] ELECTRIC-FIELD GRADIENT CALCULATIONS FOR YBA2CU3O7-X
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[9] CHARGE-DISTRIBUTION AND ELECTRIC-FIELD GRADIENTS IN YBA2CU3O7-X
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