Field-induced long-range order in the S=1 antiferromagnetic chain

Abstract

The quasi-one dimensional S=1 antiferromagnet in magnetic field H is investigated with the exact diagonalization of finite chains and the mean field approximation for the interchain interaction. In the presence of the single-ion anisotropy D, the full phase diagram in the $HT$ plane is presented for H \parallel D and H \perp D. The shape of the field-induced long-range ordered phase is revealed to be quite different between the two cases, as observed in the recent experiment of NDMAP. The estimated ratio of the interchain and intrachain couplings of NDMAP (J'/J ~ 10^{-3}) is consistent with the neutron scattering measurement.

4 pages, Revtex, with 6 eps figures

References in corpus (1)

• Universal Behavior of One-Dimensional Gapped Antiferromagnets in Staggered Magnetic Field

Cited by in corpus (9)

• Field-induced magnetic ordering in the Haldane system PbNi2V2O8
• Frustration-induced eta inversion in the S=1/2 bond-alternating spin chain
• Antiferromagnetic Dimers of Ni(II) in the S=1 Spin-Ladder Na_2Ni_2(C_2O_4)_3(H_2O)_2
• Incommensurate state in a quasi-one-dimensional $S=1/2$ bond-alternating antiferromagnet with frustration in magnetic fields
• Field-Induced Transition in the S=1 Antiferromagnetic Chain with Single-Ion Anisotropy in a Transverse Magnetic Field
• Magnetization process for a quasi-one-dimensional S=1 antiferromagnet
• Spin-Reorientation Transition of Field-Induced Magnetic Ordering Phases in the Anisotropic Haldane System
• Possibility of field-induced incommensurate order in quasi-one-dimensional frustrated spin system
• High field level crossing studies on spin dimers in the low dimensional quantum spin system Na${}_2$T${}_2$(C${}_2$O${}_4$)${}_3$(H${}_2$O)${}_2$ with T=Ni,Co,Fe,Mn