Theoretical Study of Half-Doped Models for Manganites: Fragility of the CE Phase with Disorder, Two Types of Colossal Magnetoresistances, and Charge-Ordered States for Electron-Doped Materials

A comprehensive analysis of half-doped manganites is presented using Monte Carlo simulations applied to the double-exchange model with cooperative Jahn-Teller lattice distortions in two dimensions. A variety of novel results are reported: (i) The phase diagram is established in the lambda-J_ AF plan...

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Veröffentlicht in:	arXiv.org 2003-07
Hauptverfasser:	Aliaga, H, Magnoux, D, Moreo, A, Poilblanc, D, Yunoki, S, Dagotto, E
Format:	Artikel
Sprache:	eng
Schlagworte:	Antiferromagnetism Colossal magnetoresistance Computer simulation Couplings Disproportionation Electrons Exchanging Ferromagnetism Fragility Jahn-Teller effect Long range order Magnetoresistance Magnetoresistivity Manganites Phase diagrams Phase transitions Qualitative analysis Two dimensional models
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