Effect of a Staggered Magnetic Field on the S=1 Haldane Chain with Single-ion Anisotropy

Details Effect of a Staggered Magnetic Field on the S=1 Haldane Chain with Single-ion Anisotropy Effect of a Staggered Magnetic Field on the S=1 Haldane Chain with Single-ion Anisotropy

2002-06-15

arxiv.org/abs/cond-mat/0206288v1

Phys. Lett. A 302, 48 (2002)

Physics

Condensed Matter

Strongly Correlated Electrons

11 pages, 5 figures (.eps), LaTex

Scientific paper

10.1016/S0375-9601(02)01054-X

We analyze the gaps in the excitation spectrum of a Haldane chain with
single-ion anisotropy in a staggered field. We show that the gap along the
direction of the field increases at a faster rate than the others, while its
spectral weight decreases, being transferred to a two-magnon continuum.

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