INVESTIGADORES
CABRA Daniel Carlos
artículos
Título:
Magnetization Process of the Classical Heisenberg Model on the Shastry-Sutherland Lattice
Autor/es:
M.MOLINER, D.C. CABRA, A. HONECKER, P.PUJOL, F. STAUFFER
Revista:
PHYSICAL REVIEW B
Editorial:
AMER PHYSICAL SOC
Referencias:
Año: 2009 vol. 79 p. 144401 - 144410
ISSN:
1098-0121
Resumen:
We investigate classical Heisenberg spins on the Shastry-Sutherland
lattice
and under an external magnetic field. A detailed study is carried out
both
analytically and numerically by means of classical Monte-Carlo
simulations.
Magnetization pseudo-plateaux are observed around 1/3 of the saturation
magnetization for a range of values of the magnetic couplings. We show
that the
existence of the pseudo-plateau is due to an entropic selection of a
particular
collinear state. A phase diagram that shows the domains of existence of
those
pseudo-plateaux in the $(h, T)$ plane is obtained