Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2004-01-31
J. Phys. Soc. Jpn., 73 (2004) 1587-1592
Physics
Condensed Matter
Strongly Correlated Electrons
7 pages, 8 figures
Scientific paper
10.1143/JPSJ.73.1587
The magnetization plateaux in two dimensionally coupled S=1/2 dimerized zigzag Heisenberg chains are investigated by means of the bond operator mean field approximation. In the absence of the interchain coupling, this model is known to have a plateau at half of the saturation magnetization accompanied by the spontanuous translational symmetry breakdown. The parameter regime in which the plateau appears is reproduced well within the present approximation. In the presence of the interchain coupling, this plateau is shown to be suppressed. This result is also supported by the numerical diagonalization calculation.
Chen Wei
Hida Kazuo
Shiino Masaru
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