PHOTOEXCITATION AND OXYGEN ORDERING IN YBA2CU3OX FILMS

被引：111

作者：

OSQUIGUIL, E ^{[1
]}

MAENHOUDT, M ^{[1
]}

WUYTS, B ^{[1
]}

BRUYNSERAEDE, Y ^{[1
]}

机构：

[1] UNIV CALIF SAN DIEGO,DEPT PHYS 0319,LA JOLLA,CA 92093

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.49.3675

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on the photoinduced enhancement of the critical temperature delta T-c and the in-plane conductivity delta sigma(ab) measured in a c-axis-oriented YBa2Cu3Ox film as a function of oxygen concentration (6.4 less than or equal to x less than or equal to 7). Both delta T-c and delta sigma(ab) decrease with the oxygen content, display a plateaulike behavior for 6.6 less than or equal to x less than or equal to 6.75, and become zero at x = 7. This dependence of delta T-c on x is similar to that observed for the T-c enhancement due to ordering effects in oxygen-deficient YBa2Cu3Ox single crystals. We propose that the persistent photoinduced changes in YBa2Cu3Ox films are due to photoassisted oxygen ordering.

引用

页码：3675 / 3678

页数：4

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