Persistent photoconductivity in La0.7CaxBa1-xMnO3 thin films

被引：9

作者：

Cauro, R

Grenet, JC

Gilabert, A

Medici, MG

机构：

[1] Univ Nice, LTE, CNRS, UMR 6595, F-06108 Nice, France

[2] Univ Nice, LPMC, CNRS, UMR 6622, F-06108 Nice, France

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 1999年 / 13卷 / 29-31期

关键词：

D O I：

10.1142/S0217979299003933

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report, for the first time, experiments of persistent photoconductivity (PPC) in thin films of manganese perovskites La0.7Ca0.25Ba0.05MnO3 and La0.7Ca0.2Ba0.1MnO3 showing a persistent decrease of a few percent of the resistance after illumination with visible light. These persistent photoinduced effects are seen only in a range of low temperatures (< 25 K) well below the insulator-metal transition at respectively T-c=173 K and T-c=120 K. In this low temperature range, the transport mechanism is rather of activated hopping type regime.

引用

页码：3786 / 3791

页数：6

共 11 条

[1] EFFECTS OF DOUBLE EXCHANGE IN MAGNETIC CRYSTALS [J].

DEGENNES, PG .

PHYSICAL REVIEW, 1960, 118 (01) :141-154

[2] Influence of controlled oxygen vacancies on the magnetotransport and magnetostructural phenomena in La0.85Sr0.15MnO3-delta single crystals [J].

DeLeonGuevara, AM ;

Berthet, P ;

Berthon, J ;

Millot, F ;

Revcolevschi, A ;

Anane, A ;

Dupas, C ;

LeDang, K ;

Renard, JP ;

Veillet, P .

PHYSICAL REVIEW B, 1997, 56 (10) :6031-6035

[3] ENHANCEMENT OF PERSISTENT PHOTOCONDUCTIVITY IN INSULATING HIGH-T-C THIN-FILMS [J].

HASEN, J ;

LEDERMAN, D ;

SCHULLER, IK ;

KUDINOV, V ;

MAENHOUDT, M ;

BRUYNSERAEDE, Y .

PHYSICAL REVIEW B, 1995, 51 (02) :1342-1345

[4] Persistent photoinduced effects in high-T-c superconductors [J].

Hoffmann, A ;

Reznik, D ;

Schuller, IK .

ADVANCED MATERIALS, 1997, 9 (03) :271-&

[5] An X-ray-induced insulator-metal transition in a magnetoresistive manganite [J].

Kiryukhin, V ;

Casa, D ;

Hill, JP ;

Keimer, B ;

Vigliante, A ;

Tomioka, Y ;

Tokura, Y .

NATURE, 1997, 386 (6627) :813-815

[6] PHOTOINDUCED SUPERCONDUCTIVITY IN YBACUO FILMS [J].

KUDINOV, VI ;

KIRILYUK, AI ;

KREINES, NM ;

LAIHO, R ;

LAHDERANTA, E .

PHYSICS LETTERS A, 1990, 151 (6-7) :358-364

[7]

MAENHOUDT M, 1995, THESIS CATHOLIC U LE

[8] Colossal magnetoresistance properties of the manganese perovskites La0.7-xYxCa0.3MnO3-delta [J].

Maignan, A ;

Simon, C ;

Caignaert, V ;

Raveau, B .

JOURNAL OF APPLIED PHYSICS, 1996, 79 (10) :7891-7895

[9] PHOTOINDUCED ENHANCEMENT OF SUPERCONDUCTIVITY [J].

NIEVA, G ;

OSQUIGUIL, E ;

GUIMPEL, J ;

MAENHOUDT, M ;

WUYTS, B ;

BRUYNSERAEDE, Y ;

MAPLE, MB ;

SCHULLER, IK .

APPLIED PHYSICS LETTERS, 1992, 60 (17) :2159-2161

[10] PHOTOEXCITATION AND OXYGEN ORDERING IN YBA2CU3OX FILMS [J].

OSQUIGUIL, E ;

MAENHOUDT, M ;

WUYTS, B ;

BRUYNSERAEDE, Y .

PHYSICAL REVIEW B, 1994, 49 (05) :3675-3678

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