Unusual electric field effects in Nd0.7Sr0.3MnO3

被引：95

作者：

Ogale, SB

Talyansky, V

Chen, CH

Ramesh, R

Greene, RL

Venkatesan, T

机构：

[1] Center for Superconductivity Research, Department of Physics, University of Maryland, College Park, MD

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.77.1159

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Enhanced electric field (E) induced modulation of the resistance of epitaxial thin films of Nd0.7Sr0.3MnO3 has been observed. The results show several remarkable features: first, field-direction-independent decrease of the resistance above the temperature at which the peak in resistivity occurs (T-p); second, proportionality of the modulation to E(2); third, a reduction in the magnitude and field-direction-independent reversal of the sign of Delta R/R just below T-p; and fourth, a prompt time response at high temperatures and a slower response near T-p. These results are consistent with a model of a polarization-induced lattice distortion coupling with both spin and charge transport.

引用

页码：1159 / 1162

页数：4

共 29 条

[21]

SHARMA RK, IN PRESS

[22] Experimental proof of the electronic charge-transfer mechanism in a YBa2Cu3O7-x-based field-effect transistor [J].