Published September 1997
| Version v1
Journal article
Theory of Colossal Magnetoresistance in R1-xAxMnO3
- 1. Department of Physics and Texas Center for Superconductivity, University of Houston, Houston, Texas 77204 (United States)
- 2. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 (China)
Description
A localization model comprising spin disorder and nonmagnetic randomness is presented to account for novel magnetotransport properties in Mn oxides R1-xAxMnO3. 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. copyright 1997 The American Physical Society
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 79
- Journal Issue
- 9
- Journal Page Range
- p. 1710-1713.
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 29020485
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- COULOMB FIELD; LANTHANUM OXIDES; MAGNETIZATION; MAGNETORESISTANCE; MANGANESE OXIDES; PRASEODYMIUM OXIDES; STRONTIUM OXIDES; TEMPERATURE DEPENDENCE; TRANSFER MATRIX METHOD
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CALCULATION METHODS; CHALCOGENIDES; ELECTRIC CONDUCTIVITY; ELECTRIC FIELDS; ELECTRICAL PROPERTIES; LANTHANUM COMPOUNDS; MAGNETIC MOMENTS; MAGNETIC PROPERTIES; MANGANESE COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; PRASEODYMIUM COMPOUNDS; RARE EARTH COMPOUNDS; STRONTIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS