Photoinduced insulator-to-metal transition in a perovskite manganite

被引：509

作者：

Miyano, K ^{[1
]}

Tanaka, T ^{[1
]}

Tomioka, Y ^{[1
]}

Tokura, Y ^{[1
]}

机构：

[1] JOINT RES CTR ATOM TECHNOL,TSUKUBA,IBARAKI 305,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.78.4257

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have observed an insulator-to-metal (I-M) transition triggered by the photocarrier injection-into the charge-ordered (GO) state of a perovskite manganite crystal, Pr0.7Ca0.3MnO3. The photocurrent is a highly nonlinear function of applied electric field and of light intensity; both show a threshold behavior for the I-M transition. The dependence of the anomalous photocurrent on the excitation photon energy and the temperature excludes the laser heating as the cause of the effect, suggesting the photocarrier-mediated collapse of the CO state.

引用

页码：4257 / 4260

页数：4

共 8 条

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ASAMITSU A, IN PRESS

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