Soliton contribution to the thermodynamics of the easy-plane antiferromagnetic chain: A model of TMMC [(CH3)4NMnCl3]
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The classical easy-plane antiferromagnetic chain in a magnetic field is investigated using both an analytic steepest-descent method and computer simulation techniques. The free energy is derived analytically by means of a mapping onto the soliton-bearing double-anisotropic ferromagnet. The specific heat is calculated numerically and the results are compared with the analytical findings and with experimental measurements on the linear-chain antiferromagnet TMMC in order to evaluate the validity of the analytical theory and to assess the importance of quantum fluctuations in TMMC.
|Journal||Journal of Magnetism and Magnetic Materials|
|Issue number||Part 2|
|Number of pages||2|
|Publication status||Published - 1986|