116 citations · 228 across the 9 of their papers we have counts for
9 papers
Fragility of the A-type AF and CE Phases of Manganites: An Exotic Insulator-to-Metal Transition Induced by Quenched Disorder
G. Alvarez, H. Aliaga, C. Sen +1
Using Monte Carlo simulations and the two eg-orbital model for manganites, the stability of the CE and A-type antiferromagnetic insulating states is analyzed when quenched disorder…
Time-dependent local Green's operator and its applications to manganites
H. Aliaga
An algorithm is presented to calculate the electronic local time-dependent Green's operator for manganites-related hamiltonians. This algorithm is proved to scale with the number o…
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
H. Aliaga, D. Magnoux, A. Moreo +3
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 i…
High temperature susceptibility in electron doped Ca1-xYxMnO3: Double Exchange vs Superexchange
H. Aliaga, M. T. Causa, M. Tovar +6
We present a study of the magnetic properties of the electron doped manganites Ca1-xYxMnO3 (for 0<=x<=0.25) in the paramagnetic regime. For the less doped samples (x<=0.1) the magn…
Double exchange model for RuSr_2(Eu,Gd)Cu_2O_8
H. Aliaga, A. A. Aligia
We propose a double exchange model to describe the RuO_2 planes of RuSr_2(Eu,Gd)Cu_2O_8. The Ru^+5 ions are described by localized spins, and additional electrons provided by the s…
Magnetic polarons in Ca_(1-x)Y_xMnO_3
H. Aliaga, M. T. Causa, M. Tovar +1
Experimental evidence show that in the magnetoresistive manganite Ca_(1-x) Y_xMnO_3, ferromagnetic (FM) polarons arises in an antiferromagnetic (AF) background, as a result of the…