6533b832fe1ef96bd129aef8
RESEARCH PRODUCT
Magnetic properties of a strongly correlated system on the Bethe lattice
F. P. Mancinisubject
PhysicsStrongly Correlated Electrons (cond-mat.str-el)Hubbard modelBethe latticeCondensed matter physicsFOS: Physical sciencesGeneral Physics and AstronomyCharge (physics)Magnetic fieldCondensed Matter - Strongly Correlated ElectronsMagnetizationPhase (matter)Phase diagramPhysical quantitydescription
We study the influence of an external magnetic field h on the phase diagram of a system of Fermi particles living on the sites of a Bethe lattice with coordination number z and interacting through on-site U and nearest-neighbor V interactions. This is a physical realization of the extended Hubbard model in the narrow-band limit. Our results establish that the magnetic field may dramatically affect the critical temperature below which a long-range charge ordered phase is observed, as well as the behavior of physical quantities, inducing, for instance, magnetization plateaus in the magnetization curves. Relevant thermodynamic quantities - such as the specific heat and the susceptibility - are also investigated at finite temperature by varying the on-site potential, the particle density and the magnetic field.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-03-09 | Journal of Physical Studies |