Finite-temperature properties of the two-orbital Anderson model

  title={Finite-temperature properties of the two-orbital Anderson model},
  author={Luis Craco},
  journal={Journal of Physics: Condensed Matter},
  • L. Craco
  • Published 20 September 1999
  • Physics
  • Journal of Physics: Condensed Matter
The metallic phase of the two-orbital Anderson lattice is studied in the limit of infinite spatial dimensions, where a second-order perturbation treatment is used to solve the single-site problem. Using this approximation, in the Kondo regime, we find that the finite-temperature properties of the conduction electrons exhibit the same behaviour as is observed in the metallic phase of the two-channel Kondo lattice. Possible connections between these two models are discussed. 
2 Citations
Quantum orbital entanglement: A view from the extended periodic Anderson model
In an attempt to derive the electronic structure of narrow-band systems, we extend the periodic Anderson model by exploiting the Falicov--Kimball--Hubbard interactions. The dynamical mean-field


Periodic Anderson model in infinite dimensions.
The symmetric periodic Anderson model is studied in the limit of infinite spatial dimensions within an essentially exact quantum Monte Carlo method. The single-particle spectral function develops a
Magnetoresistance in the Two-Channel Anderson Lattice
The paramagnetic phase of the two-channel Anderson lattice model in the Kondo limit is investigated in infinite spatial dimensions using the noncrossing approximation. The resistivity exhibits a
Mott transition in the d=
Using a combination of perturbation theory and quantum Monte Carlo, we elucidate the behavior of the single-particle Green's function and the local spin-spin correlation function near the Mott
Relation between the Anderson and Kondo Hamiltonians
A canonical transformation is used to relate the Anderson model of a localized magnetic moment in a dilute alloy to that of Kondo. In the limit of small $s\ensuremath{-}d$ mixing, which is the most
Simplified periodic Anderson model: Exact solution in infinite dimensions
We present a diagrammatic perturbative treatment of the hybridization for the periodic Anderson model that recovers the dynamical mean-field equations in the limit of infinite dimensions. The
Two-Channel Kondo Lattice: An Incoherent Metal.
The paramagnetic phase of the two-channel Kondo lattice model is examined with a quantum Monte Carlo simulation in the limit of infinite dimensions. We find non-Fermi-liquid behavior at low
Tight-binding treatment of the Hubbard model in infinite dimensions.
  • Craco, Gusmão
  • Physics
    Physical review. B, Condensed matter
  • 1996
The Hubbard model is discussed by means of a perturbative expansion of the one-particle Green’s function around the atomic limit, allowing a formal resummation that reproduces a previously proposed mapping to a single-site mean-field problem.
Solution of then-channel Kondo problem (scaling and integrability)
The exact solution of the Kondo model forn-flavours of electrons with the spin 1/2 scattered by theS-spin impurity is presented. Forn=2S=5 the model describes manganese impurities dissolved in a
Kondo effect in real metals
Starting from the most general form of the Anderson hamiltonian, the behaviour of magnetic impurities in real metals is considered, taking into account the orbital structure of the local impurity