Unusual finite size effects on critical temperature in fcc Ising antiferromagnets
- 15 April 1988
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 63 (8) , 3036-3038
- https://doi.org/10.1063/1.340885
Abstract
A new multispin coding technique is presented for Monte Carlo simulation of antiferromagnetic Ising spin systems on an fcc lattice. The nearest- and next-nearest-neighbor interactions J1 and J2 are included. This technique allows a considerable gain in CPU time and computer memory. As a first application, we have studied samples of 4L3 spins with L up to 48. An unusual behavior of the critical temperature with increasing L is found in the case of nearest-neighbor interaction in zero field. Finite size effects on the locations of tricrical points in the (T,J2/J1) plane are discussed.This publication has 12 references indexed in Scilit:
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