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Generation of localized magnetic moments in the charge-density-wave state

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  • Ramil Akzyanov
  • Alexander Rozhkov

Abstract

We propose a mechanism explaining the generation of localized magnetic moments in charge-density-wave compounds. Our model Hamiltonian describes an Anderson impurity placed in a host material exhibiting the charge-density wave. There is a region of the model’s parameter space, where even weak Coulomb repulsion on the impurity site is able to localize the magnetic moment on the impurity. The phase diagram of a single impurity at T=0 is mapped. To establish the connection with experiment, the thermodynamic properties of a random impurity ensemble is studied. Magnetic susceptibility of the ensemble diverges at low temperature; heat capacity as a function of the magnetic field demonstrates pronounced low field peak. Both features are consistent with experiments on orthorhombic TaS 3 and blue bronze. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2015

Suggested Citation

  • Ramil Akzyanov & Alexander Rozhkov, 2015. "Generation of localized magnetic moments in the charge-density-wave state," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 88(8), pages 1-9, August.
    • Handle: RePEc:spr:eurphb:v:88:y:2015:i:8:p:1-9:10.1140/epjb/e2015-60219-x
    DOI: 10.1140/epjb/e2015-60219-x
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    Keywords

    Solid State and Materials;

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