Defect mechanism of photoinduced superconductivity in YBa2Cu3O6+x

被引：38

作者：

Federici, JF ^{[1
]}

Chew, D ^{[1
]}

Welker, B ^{[1
]}

Savin, W ^{[1
]}

GutierrezSolana, J ^{[1
]}

Fink, T ^{[1
]}

Wilber, W ^{[1
]}

机构：

[1] USA,RES LAB,PHYS SCI DIRECTORATE,FT MONMOUTH,NJ 07703

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.52.15592

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Although persistent photoconductivity and photoinduced superconductivity have been experimentally observed in oxygen-deficient and superconducting YBa2Cu3O6+x, the mechanism which is responsible for these effects is still under debate. The possibility of a defect related mechanism in laser-deposited thin films of YBa2Cu3O6+x is studied using four-point resistivity and photoluminescence techniques. It is found that there is a correlation between the photoluminescence spectrum and the wavelength dependence of the photoinduced conductivity. Peaks in the luminescence spectrum change intensity upon initiation of the photoinduced state. These results support an oxygen vacancy defect model of photoinduced persistent conductivity and superconductivity in which the oxygen vacancies act as weakly luminescent F-centers under illumination.

引用

页码：15592 / 15597

页数：6

共 29 条

[1] ANDREEV VN, 1987, JETP LETT+, V46, P492
[2] SPECTRUM OF PERSISTENT PHOTOCONDUCTIVITY IN YBACUO FILMS
AYACHE, C
CHAPLYGIN, IL
KIRILYUK, AI
KREINES, NM
KUDINOV, VI
[J]. SOLID STATE COMMUNICATIONS, 1992, 81 (01) : 41 - 45
[3] PERSISTENT PHOTOCONDUCTIVITY IN INSULATING AND SUPERCONDUCTING YBA2CU3OX THIN-FILMS - TEMPERATURE AND SPECTRAL DEPENDENCE
BUDKO, SL
FENG, HH
DAVIS, MF
WOLFE, JC
HOR, PH
[J]. PHYSICAL REVIEW B, 1993, 48 (22): : 16707 - 16713
[4] THERMALLY STIMULATED LUMINESCENCE FROM RARE-EARTH-DOPED BARIUM COPPER OXIDES
COOKE, DW
REMPP, H
FISK, Z
SMITH, JL
JAHAN, MS
[J]. PHYSICAL REVIEW B, 1987, 36 (04): : 2287 - 2289
[5] DETECTION OF SURFACE (APPROXIMATELY 1 MU-M) IMPURITY PHASES IN HIGH TC-SUPERCONDUCTORS
COOKE, DW
JAHAN, MS
SMITH, JL
MAEZ, MA
HULTS, WL
RAISTRICK, ID
PETERSON, DE
OROURKE, JA
RICHARDSON, SA
DOSS, JD
GRAY, ER
RUSNAK, B
LAWRENCE, GP
FORTGANG, C
[J]. APPLIED PHYSICS LETTERS, 1989, 54 (10) : 960 - 962
[6] CORRELATION OF THERMALLY STIMULATED LUMINESCENCE WITH RADIO-FREQUENCY SURFACE-RESISTANCE OF HIGH-TEMPERATURE SUPERCONDUCTORS
COOKE, DW
BENNETT, B
GRAY, ER
HOULTON, RJ
HULTS, WL
MAEZ, MA
MAYER, A
SMITH, JL
JAHAN, MS
[J]. APPLIED PHYSICS LETTERS, 1989, 55 (10) : 1038 - 1040
[7] COOKE DW, 1991, J LUMIN, V48-9, P819
[8] OPTICAL STUDIES OF THE A-AXIS, B-AXIS, AND C-AXIS CHARGE DYNAMICS IN YBA2CU3O6+X
COOPER, SL
REZNIK, D
KOTZ, A
KARLOW, MA
LIU, R
KLEIN, MV
LEE, WC
GIAPINTZAKIS, J
GINSBERG, DM
VEAL, BW
PAULIKAS, AP
[J]. PHYSICAL REVIEW B, 1993, 47 (13): : 8233 - 8248
[9] FRUSTRATED ELECTRONIC PHASE-SEPARATION AND HIGH-TEMPERATURE SUPERCONDUCTORS
EMERY, VJ
KIVELSON, SA
[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1993, 209 (04): : 597 - 621
[10] EREMENKO VV, 1988, JETP LETT, V47, P619

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