Comment on compressible spin systems

Barma, Mustansir (1977) Comment on compressible spin systems Physical Review B: Condensed Matter and Materials Physics, 16 (1). pp. 593-595. ISSN 1098-0121

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The zero-temperature phase diagram for the linear compressible chain of classical Heisenberg spins is obtained. In the space of appropriate coupling constants, the spin-flop phase is separated from the aligned phase by a surface along which runs a line of tricritical points. Also, the molecular-field approximation for coupled spin-lattice systems is examined. With classical variables, there are two ways of proceedings, and both have been used previously. The procedures are discussed on a variational basis, and it is pointed out that one gives a lower upper bound on the free energy than the other.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:79571
Deposited On:27 Jan 2012 12:43
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