Theory of colossal magnetoresistance in R(1-x)A(x)MnO(3)

被引：154

作者：

Sheng, L

Xing, DY

Sheng, DN

Ting, CS

机构：

[1] UNIV HOUSTON, TEXAS CTR SUPERCONDUCT, HOUSTON, TX 77204 USA

[2] NANJING UNIV, NATL LAB SOLID STATE MICROSTRUCT, NANJING 210093, PEOPLES R CHINA

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.79.1710

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A localization model comprising spin disorder and nonmagnetic randomness is presented to account for novel magnetotransport properties in Mn oxides R(1-x)A(x)MnO(3). Localization length of electrons as a function of magnetization is determined by means of the transfer matrix method. Including the Coulomb interaction between electrons, the variable-range hopping resistivity is calculated as a function of temperature and magnetic field. The resulting sharp resistivity peak near the Curie temperature and, in particular, the magnitude of the colossal negative magnetoresistance are in good agreement with experimental measurements.

引用

收藏

页码：1710 / 1713

页数：4

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