Randomness Effect on Multicritical Phenomena in Double-Exchange Systems
arXiv:cond-mat/0304542 · doi:10.1016/j.jmmm.2003.12.483
Abstract
Double-exchange model interacting with adiabatic phonons is studied in the presence of randomness by using the Monte-Carlo method and the systematic size-scaling analysis. A bicritical behavior is found between the ferromagnetic metal and the charge-ordered insulator. We find the distinct response to the randomness between these two states, which agrees well with the experimental results in the colossal magnetoresistance manganites.
2 pages including 2 figures, Proceedings for ICM2003
References in corpus (4)
- Colossal Magnetoresistant Materials: The Key Role of Phase Separation
- Colossal Effects in Transition Metal Oxides Caused by Intrinsic Inhomogeneities
- Critical Phenomena of Ferromagnetic Transition in Double-Exchange Systems
- Structures and Electromagnetic Properties of New Metal-Ordered Manganites; RBaMn_{2}O_{6} (R = Y and Rare Earth Elements)