Zobrazeno 1 - 10
of 425
pro vyhledávání: '"Coqblin, B"'
Application of the S=1 underscreened Anderson lattice model to Kondo uranium and neptunium compounds
Autor:
Thomas, Christopher, Simões, Acirete S. da Rosa, Iglesias, J. R., Lacroix, C., Perkins, N. B., Coqblin, B.
Publikováno v:
Phys. Rev. B 83, 014415 (2011)
Magnetic properties of uranium and neptunium compounds showing the coexistence of Kondo screening effect and ferromagnetic order are investigated within the Anderson lattice Hamiltonian with a two-fold degenerate $f$-level in each site, corresponding
Externí odkaz:
http://arxiv.org/abs/1012.4229
We present here a theoretical model in order to describe the competition between the Kondo effect and the spin glass behavior. The spin glass part of the starting Hamiltonian contains Ising spins with an intersite exchange interaction given by the lo
Externí odkaz:
http://arxiv.org/abs/1002.0762
The physics of disordered alloys, such as typically the well known case of CeNi1-xCux alloys, showing an interplay among the Kondo effect, the spin glass state and a magnetic order, has been studied firstly within an average description like in the S
Externí odkaz:
http://arxiv.org/abs/0907.0981
Publikováno v:
Physical Review B 76, 125101 (2007)
We present theoretical results for the underscreened Kondo lattice model with localized S=1 spins coupled to a conduction band through a Kondo coupling, $J_K$, and interacting among them ferromagnetically. We use a fermionic representation for the sp
Externí odkaz:
http://arxiv.org/abs/0711.4765
The Doniach's diagram has been originally proposed to describe the competition between the local Kondo effect and the intersite RKKY interactions in cerium compounds. Here we discuss the extension of this diagram to different variations of Kondo latt
Externí odkaz:
http://arxiv.org/abs/0708.3807
Coexistence between ferromagnetic order and Kondo behavior has been observed in some uranium compounds. The underscreened Kondo lattice model can provide a possible description of this coexistence. Here we present a model of a lattice of S=1 spins co
Externí odkaz:
http://arxiv.org/abs/cond-mat/0609199
The competition between spin glass, ferromagnetism and Kondo effect is analysed here in a Kondo lattice model with an inter-site random coupling $J_{ij}$ between the localized magnetic moments given by a generalization of the Mattis model which repre
Externí odkaz:
http://arxiv.org/abs/cond-mat/0606551
A theory is proposed to describe the competition among antiferromagnetism (AF), spin glass (SG) and Kondo effect. The model describes two Kondo sublattices with an intrasite Kondo interaction strength $J_{K}$ and an interlattice quantum Ising interac
Externí odkaz:
http://arxiv.org/abs/cond-mat/0603026
A theory is proposed to describe the competition among antiferromagnetism (AF), spin glass (SG) and Kondo effect. The model describes two Kondo sublattices with an intrasite Kondo interaction strength $J_{K}$ and a random Gaussian interlattice intera
Externí odkaz:
http://arxiv.org/abs/cond-mat/0511615
Publikováno v:
J. Phys.: Condens. Matter 17 (2005) S823-S836
The pressure-induced changes in the temperature-dependent thermopower S(T) and electrical resistivity \rho(T) of CeRu_2Ge_2 are described within the single-site Anderson model. The Ce-ions are treated as impurities and the coherent scattering on diff
Externí odkaz:
http://arxiv.org/abs/cond-mat/0408280