Stability of a photoinduced insulator-metal transition in Pr1-xCaxMnO3

被引：56

作者：

Ogawa, K

Wei, W

Miyano, K

Tomioka, Y

Tokura, Y

机构：

[1] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 113, Japan

[2] Joint Res Ctr Atom Technol, Tsukuba, Ibaraki 305, Japan

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.57.R15033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A photoinduced insulator-metal transition has been found in crystals of Pr1-xCaxMnO3 with various doping levels (x = 0.31, 0.35, 0.40, 0.45, and 0.50). The current-voltage relationship and the temperature dependence of the stability of the metallic region indicate that the metallic states of all x are of the same origin, and exclude the Joule heating as the mechanism of sustaining the metallic phase. The driving force for the transition is clearly the collapse of the charge-ordered state by the photocarriers.

引用

页码：15033 / 15036

页数：4

共 18 条

[1] MECHANISM OF THRESHOLD SWITCHING IN AMORPHOUS ALLOYS [J].