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arXiv:cond-mat/0107561 · Journal of the Physical Society of Japan

Thermodynamic Properties of theS=1/2 Heisenberg Chain with Staggered Dzyaloshinsky–Moriya Interaction

Naokazu Shibata, Kazuo Ueda

Published Dec 15, 2001• 33 citations
arXivHTMLPDF

Abstract

Thermodynamic properties of the S=1/2 Heisenberg chain in transverse staggered magnetic field H^y_s and uniform magnetic field H^x perpendicular to the staggered field is studied by the finite-temperature density-matrix renormalization-group method. The uniform and staggered magnetization and specific heat are calculated from zero temperature to high temperatures up to T/J=4 under various strength of magnetic fields from H^y_s/J, H^x/J=0 to 2.4. The specific heat and magnetization of the effective Hamiltonian of the Yb_4As_3 are also presented, and field induced gap formation and diverging magnetic susceptibility at low temperature are shown.

DOI
10.1143/jpsj.70.3690

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