Magnetic specific heat of the honeycomb lattice of spin one-half with anisotropic Heisenberg exchange by a new method

Yoshiaki Tanaka and Norikiyo Uryû

Physica A: Statistical Mechanics and its Applications, 1981, vol. 107, issue 3, 629-637

Abstract: The magnetic specific heat of the honeycomb lattice of S = 12 Heisenberg spin with anisotropic exchange is calculated by using the new approximation method reported in a previous paper. In the spin system with the anisotropy parameter |γ|<1 (Ising-Heisenberg system), the specific heat shows a similar divergence as that of the pure Ising spin system, namely a logarithmic divergence at the critical temperature. The same approximation is also applied to the spin system with |γ|>1 (Heisenberg XY system), showing a divergence of the same kind.

Date: 1981
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Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:107:y:1981:i:3:p:629-637

DOI: 10.1016/0378-4371(81)90194-1

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