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Alonso, J. L. ; Fernández Pérez, Luis Antonio ; Guinea, F ; Laliena, V. ; Martín Mayor, Víctor | American Physical Society | 2001-02-01It is shown that the double-exchange Hamiltonian, with weak antiferromagnetic interactions, has a rich variety of first-order transitions between phases with different electronic densities and/or magnetizations. The paramagnetic-ferromagnetic tr[...]texto impreso
Alonso, J. L. ; Fernández Pérez, Luis Antonio ; Guinea, F ; Laliena, V. ; Martín Mayor, Víctor | Elsevier | 2001-03-05The Hybrid Monte Carlo algorithm is adapted to the simulation of a system of classical degrees of freedom coupled to non self-interacting lattices fermions. The diagonalization of the Hamiltonian matrix is avoided by introducing a path-integral [...]
