Superconducting and normal-state properties of oxygen-deficient YBa2Cu3Ox thin films under light illumination

被引：0
作者：
Gob, W
Lang, W
Markowitsch, W
Stockinger, C
Kula, W
Sobolewski, R
机构：
[1] UNIV VIENNA,INST FESTKORPERPHYS,A-1090 VIENNA,AUSTRIA
[2] UNIV ROCHESTER,DEPT ELECT ENGN,ROCHESTER,NY 14627
[3] UNIV ROCHESTER,LASER ENERGET LAB,ROCHESTER,NY 14627
来源：
APPLIED SUPERCONDUCTIVITY 1995, VOLS. 1 AND 2: VOL 1: PLENARY TALKS AND HIGH CURRENT APPLICATIONS; VOL 2: SMALL SCALE APPLICATIONS | 1995年 / 148卷
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中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on the influence of light on the normal state and superconducting transport properties of superconducting YBa2Cu3O6.6 thin films. After illumination with white light for several hours at 150 Y a persistent decrease of the electrical resistivity, an increase of the Hall mobility and a change of the magnetoconductivity was observed. The effect relaxes with a time constant of several hours at 320 K. A kink in the resistivity curve and a sign change in the slope of the Hall effect at this temperature in nonilluminated samples have also been observed. Measurements of the fluctuation magnetoconductivity revealed a photoinduced enhancement of the superconducting coherence lengths in both in-plane and out-of-plane directions. Our results indicate structural rearrangements of oxygen vacancies in the Cu-O chains upon illumination.
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页码：979 / 982
页数：4
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