Charge ordering and magnetoresistance in Nd1-xCaxMnO3 due to reduced double exchange

被引：133

作者：

Liu, K ^{[1
]}

Wu, XW ^{[1
]}

Ahn, KH ^{[1
]}

Sulchek, T ^{[1
]}

Chien, CL ^{[1
]}

Xiao, JQ ^{[1
]}

机构：

[1] UNIV DELAWARE,DEPT PHYS & ASTRON,NEWARK,DE 19716

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.54.3007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Structural, transport, and magnetic properties of Nd1-xCaxMnO3 (0 less than or equal to x less than or equal to 1) have been studied to probe the consequence of strong lattice distortion and reduced double exchange. Charge ordering has been observed over a large composition range of 0.30 less than or equal to x less than or equal to 0.80. For 0.33 less than or equal to x less than or equal to 0.40, at low temperatures, a magnetic field induces a first-order antiferromagnetic semiconductor to ferromagnetic metal transition and reduces the resistance by several orders of magnitude. These results illustrate the competition between double exchange and mechanisms that promote charge localization.

引用

页码：3007 / 3010

页数：4

共 23 条

[1] A STRUCTURAL PHASE-TRANSITION INDUCED BY AN EXTERNAL MAGNETIC-FIELD [J].