The transition temperature between the ordered and the paramagnetic phase of 3D quantum Heisenberg ferro- and antiferromagnets is theoretically predicted with very good accuracy for any spin value, starting from its known counterpart for the classical system. The really straightforward evaluation is made possible by a method that reduces the quantum problem to an effective classical Hamiltonian.
TRANSITION TEMPERATURE OF THREE-DIMENSIONAL QUANTUM HEISENBERG FERRO- AND ANTIFERROMAGNETS / A. CUCCOLI; R. VAIA; R. MACIOCCO. - In: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - ISSN 0304-8853. - STAMPA. - 226-230, PART 1:(2001), pp. 566-568. [10.1016/S0304-8853(00)00682-X]
TRANSITION TEMPERATURE OF THREE-DIMENSIONAL QUANTUM HEISENBERG FERRO- AND ANTIFERROMAGNETS
CUCCOLI, ALESSANDRO;
2001
Abstract
The transition temperature between the ordered and the paramagnetic phase of 3D quantum Heisenberg ferro- and antiferromagnets is theoretically predicted with very good accuracy for any spin value, starting from its known counterpart for the classical system. The really straightforward evaluation is made possible by a method that reduces the quantum problem to an effective classical Hamiltonian.
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