Magnetic phase diagram of a frustrated ferrimagnetic ladder: Relation to the one-dimensional boson Hubbard model
arXiv:cond-mat/0604495 · doi:10.1103/PhysRevB.73.132407
Abstract
We study the magnetic phase diagram of two coupled mixed-spin Heisenberg chains as a function of the frustration parameter related to diagonal exchange couplings. The analysis is performed by using spin-wave series and exact numerical diagonalization techniques. The obtained phase diagram--containing the Luttinger liquid phase, the plateau phase with a magnetization per rung , and the fully polarized phase--is closely related to the generic phase diagram of the one-dimensional boson Hubbard model.
arXiv comment4 pages, 2 figures
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