Ferromagnetism in the Kondo-lattice model
نویسندگان
چکیده
منابع مشابه
Metallic ferromagnetism in the Kondo lattice.
Metallic magnetism is both ancient and modern, occurring in such familiar settings as the lodestone in compass needles and the hard drive in computers. Surprisingly, a rigorous theoretical basis for metallic ferromagnetism is still largely missing. The Stoner approach perturbatively treats Coulomb interactions when the latter need to be large, whereas the Nagaoka approach incorporates thermodyn...
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Spin glass and Ferromagnetism in Kondo lattice compounds S. G. Magalhães, A. A. Schmidt, Alba Theumann, and B. Coqblin 1 Departamento de F́ısica – UFSM, 97105-900 Santa Maria, RS, Brazil 2 Departamento de Matemática – UFSM, 97105-900 Santa Maria, RS, Brazil 3 Instituto de F́ısica – UFRGS, 91501-970 Porto Alegre, RS, Brazil 4 Laboratoire de Physique des Solides, Université Paris-Sud, 91405 Orsay, ...
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The competition among spin glass (SG), ferromagnetism and Kondo effect has been analysed in a Kondo lattice model where the inter-site coupling Jij between the localized magnetic moments is given by a generalized Mattis model [5] which represents an interpolation between ferromagnetism and a highly disordered spin glass. Functional integral techniques with of Grassmann fields has been used to o...
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It is becoming widely recognized that, contrary to earlier expectations, the usual one-band Hubbard model does not give an explanation for itinerant ferromagnetism. After reviewing the status of magnetic ordering in the one-band model, we discuss the possibility of ferromagnetism in some recently introduced two-band Hubbard models, and in generalized Ander-son lattices. It is argued that these ...
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The one dimensional Kondo lattice model is investigated using Quantum Monte Carlo and transfer matrix techniques. In the strong coupling region ferromagnetic ordering is found even at large band fillings. In the weak coupling region the system shows an RKKY like behavior. In recent years the Kondo lattice model (KLM) has been investigated to describe the physics of the so called Heavy Fermion s...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2002
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.65.144419