Similarities between the hubbard and periodic anderson models at finite temperatures
The single band Hubbard and the two band periodic Anderson Hamiltonians have traditionally been applied to rather different physical problems-the Mott transition and itinerant magnetism, and Kondo singlet formation and scattering off localized magnetic states, respectively. In this paper, we compare the magnetic and charge correlations, and spectral functions, of the two systems. We show quantitatively that they exhibit remarkably similar behavior, including a nearly identical topology of the finite temperature phase diagrams at half filling. We address potential implications of this for theories of the rare earth "volume collapse" transition.
Held
K
Theoretische Physik III, Universitat Augsburg, 86135 Augsburg, Germany.
Huscroft
C
Scalettar
RT
McMahan
AK