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On the CPA treatment of Magnetic Disordered Hubbard model (II)

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Zeitschrift für Physik B Condensed Matter

Abstract

In this contribution we continue the treatment of the model based on the Hubbard hamiltonian in which the stochastic fields acting at the sites of the atoms can assume arbitrary directions and values due to accepted distribution. The averaging procedure introduced by Brandt and Gross to study the behaviour of the magnetically disordered system is used for a model with stochastically localized magnetic fields, resulting from magnetic moments, at the atomic sites, as previously in I. The coherent potential approximation-like method is employed. The selfconsistency problem is regarded as well as the thermodynamic consequences like density of states, localization function, magnetization, high temperature susceptibility and dc conductivity as functions of temperature are discussed.

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Author notes

  1. M. Pietruszka

    Present address: Wydział Biologii i Ochrony Srodowiska, Uniwersytet Sląski, Jagiellońska 28, PL-40-032, Katowice, Poland

  2. W. Borgieł

    Present address: Instytut Fizyki, Uniwersytet Sląski, Uniwersytecka 4, PL-40-007, Katowice, Poland

Authors and Affiliations

  1. Faculty of Biology, Silesian University, Katowice, Poland

    M. Pietruszka

  2. Institute of Physics, Silesian University, Katowice, Poland

    W. Borgieł

Authors
  1. M. Pietruszka
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  2. W. Borgieł
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Additional information

Supported in part by Polish Academy of Science, Problem MR I. 9. Partly done at Institute of Physics and Chemistry of Metals, Silesian University, Katowice, Poland

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Pietruszka, M., Borgieł, W. On the CPA treatment of Magnetic Disordered Hubbard model (II). Z. Physik B - Condensed Matter 61, 147–152 (1985). https://doi.org/10.1007/BF01307769

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  • DOI: https://doi.org/10.1007/BF01307769

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