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Showing 2006Show all
3 papers · 1 filter
cond-mat.stat-mech2006
A simple model for magnetism in itinerant electron systems
Andre M. C. Souza
A new lattice model of interacting electrons is presented. It can be viewed as a classical Hubbard model in which the energy associated to electron itinerance is proportional to th…
cond-mat.str-el2006★ 16 cited
Correlated electrons systems on the Apollonian network
Andre M. C. Souza, Hans Herrmann
Strongly correlated electrons on an Apollonian network are studied using the Hubbard model. Ground-state and thermodynamic properties, including specific heat, magnetic susceptibil…
cond-mat.str-el2006★ 1 cited
Magnetic Excitations of the 2-D Sm Spin Layers in Sm(La,Sr)CuO4
F. Ronning, C. Capan, N. O. Moreno +4
We present specific heat and susceptibility data on Sm(La,Sr)CuO4 in magnetic fields up to 9 T and temperatures down to 100 mK. We find a broad peak in specific heat which is insen…