Anharmonic effects in magnetoelastic chains

Details Anharmonic effects in magnetoelastic chains Anharmonic effects in magnetoelastic chains

2011-04-11

arxiv.org/abs/1104.1881v1

Phys. Rev. B 83, 224406 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 3 figures

Scientific paper

10.1103/PhysRevB.83.224406

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.

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