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Low-temperature properties of the generalized two-chain quantum spin model

Title
Low-temperature properties of the generalized two-chain quantum spin model
Authors
Park S.Lee K.
Ewha Authors
이공주복
SCOPUS Author ID
이공주복scopus
Issue Date
1998
Journal Title
Journal of Physics A: Mathematical and General
ISSN
0305-4470JCR Link
Citation
vol. 31, no. 31, pp. 6569 - 6578
Indexed
SCOPUS WOS scopus
Abstract
We consider an exactly solvable two-chain quantum spin-1/2 model in a generalized form with enhanced spin frustration. This model is exactly diagonalized via Bethe's ansatz. The low-temperature specific heat of the system is obtained with and without a magnetic field, using the thermodynamic Bethe ansatz equations. We also calculate the magnetic susceptibility in a sufficiently weak field, yielding typical logarithmic corrections. The spin frustration affects only the amplitudes in the magnetic susceptibility and the specific heat. This extends the previous results for a simple two-chain quantum spin model to the generalized one.
DOI
10.1088/0305-4470/31/31/004
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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