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14-01E

14-01E


By Velychko - Posted on 03 July 2014

UDC: 
537.9, 537.622
PACS: 
75.10.Jm

Simple-cubic-lattice spin-1/2 Heisenberg model within Green-function method

O. Menchyshyn
T. Krokhmalskii
O. Derzhko

We consider the spin-1/2 Heisenberg model on a simple cubic lattice with ferromagnetic or antiferromagnetic nearest-neighbor interaction within the spin-rotation-invariant second-order Green-function method. We focus on the high-temperature behavior of the static susceptibility which can be used to determine the critical temperature of the model. We compare the Green-function results with the quantum Monte Carlo simulation data. We discuss perspectives for application of the Green-function method for the study of the high-temperature properties of frustrated quantum spin models.

Year: 
2014
Pages: 
31
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