121 citations · 231 across the 8 of their papers we have counts for
12 papers
Study of the One- and Two-Band Models for Colossal Magnetoresistive Manganites Using the Truncated Polynomial Expansion Method
C. Sen, G. Alvarez, Y. Motome +5
Considerable progress has been recently made in the theoretical understanding of the colossal magnetoresistance (CMR) effect in manganites. The analysis of simple models with two c…
Entropy-Driven Reentrant Behavior in CMR Manganites
Nobuo Furukawa, Yukitoshi Motome, Naoto Nagaosa
We discuss the origin of the reentrant behaviors of insulating states above the Curie temperature of the colossal magnetoresistance manganites. We consider a system where charge or…
An Origin of CMR: Competing Phases and Disorder-Induced Insulator-to-Metal Transition in Manganites
Yukitoshi Motome, Nobuo Furukawa, Naoto Nagaosa
We theoretically explore the mechanism of the colossal magnetoresistance in manganese oxides by explicitly taking into account the phase competition between the double-exchange fer…
Order N Monte Carlo Algorithm for Fermion Systems Coupled with Fluctuating Adiabatical Fields
Nobuo Furukawa, Yukitoshi Motome
An improved algorithm is proposed for Monte Carlo methods to study fermion systems interacting with adiabatical fields. To obtain a weight for each Monte Carlo sample with a fixed…
Disorder Effect on Spin Excitation in Double Exchange Systems
Yukitoshi Motome, Nobuo Furukawa
Spin excitation spectrum is studied in the double exchange model in the presence of disorder. Spin wave approximation is applied in the lowest order of 1/S expansion. The disorder…
Monte Carlo Study of Doping Change and Disorder Effect on Double Exchange Ferromagnetism
Yukitoshi Motome, Nobuo Furukawa
Phase diagram and critical properties are studied for three-dimensional double exchange model with and without quenched disorder. Employing the Monte Carlo method and the systemati…