Negative differential resistivity in Ca3Ru2O7:: Unusual transport and magnetic coupling in a near-metallic system

被引：12

作者：

Guertin, RP ^{[1
]}

Bolivar, J

Cao, G

McCall, S

Crow, JE

机构：

[1] Tufts Univ, Dept Phys, Medford, MA 02155 USA

[2] Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

来源：

SOLID STATE COMMUNICATIONS | 1998年 / 107卷 / 06期

基金：

美国国家科学基金会;

关键词：

magnetically ordered materials; insulators; electronic transport; electron-electron interactions; phase transitions;

D O I：

10.1016/S0038-1098(98)00231-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The d.c. current-voltage characteristics of single crystals of bilayered Ca3Ru2O7 show "S_shaped", current-controlled, negative differential resistivity, the first such observation in heavy transition metal oxides. The non-ohmic behavior is restricted to the Ru-based antiferromagnetic non-metallic region of the complex temperature-magnetic field phase space. The effect is seen in related single crystal iridates. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：263 / 266

页数：4

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