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The specific heat behavior of the Kondo lattice model in manganese oxides

E. BÎRSAN1,* , C. CANDIN2

Affiliation

  1. Physics Department, University Lucian Blaga, str. Dr I.Ratiu, No.5-7, 550024, Sibiu, Romania
  2. Faculty of Engineering “Hermann Oberth”, University Lucian Blaga of Sibiu, Romania

Abstract

Materials that present the phenomenon of “colossal” magnetoresistance are currently under much experimental investigation due to their potential technological applications. Typical compounds that have this phenomenon are ferromagnetic (FM) metallic oxides of the form R1−xAxMnO3 (where R = La, Pr, Nd; A = Sr, Ca, Ba, Pb). In this paper we investigate the specific heat behavior of these manganese oxides by Monte Carlo simulations on the ferromagnetic Kondo lattice model. We present the dependence of specific heat for square and simple cubic lattices with temperature for different electron densities and Kondo lattice model parameters..

Keywords

Kondo lattice model, Specific heat, Strongly correlated electron systems.

Submitted at: April 11, 2007
Accepted at: July 15, 2007

Citation

E. BÎRSAN, C. CANDIN, The specific heat behavior of the Kondo lattice model in manganese oxides, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 7, pp. 2237-2240 (2007)