Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2002-02-06
Physics
Condensed Matter
Strongly Correlated Electrons
6 pages, 7 eps figures
Scientific paper
10.1103/PhysRevB.65.214405
We investigate the magnetization process for a quasi-one-dimensional S=1 antiferromagnet with bond alternation. By combining the density matrix renormalization group method with the interchain mean-field theory, we discuss how the interchain coupling affects the magnetization curve. It is found that the width of the magnetization plateau is considerably reduced upon introducing the interchain coupling. We obtain the phase diagram in a magnetic field. The effect of single-ion anisotropy is also addressed.
Kawaguchi Akira
Kawakami Norio
Koga Akihisa
Okunishi Kouichi
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