INVESTIGADORES
LAMAS Carlos Alberto
artículos
Título:
Anharmonic effects in magnetoelastic chains
Autor/es:
D.C. CABRA; C.J. GAZZA; C.A. LAMAS; H.D. ROSALES
Revista:
PHYSICAL REVIEW B
Editorial:
AMER PHYSICAL SOC
Referencias:
Lugar: New York; Año: 2011 vol. 83 p. 224406 - 224411
ISSN:
1098-0121
Resumen:
We
describe a new mechanism leading to the formation of rational
magnetization plateau phases, which is mainly due to the anharmonic
spin-phonon coupling. This anharmonicity produces plateaux in the
magnetization curve at unexpected values of the magnetization without
explicit magnetic frustration in the Hamiltonian and without an explicit
breaking of the translational symmetry. These plateau phases are
accompanied by magneto-elastic deformations which are not present in the
harmonic case.