Premium
One‐ and Two‐Spin Cluster Approximations for the Site‐Diluted Spin‐1 Ising Model
Author(s) -
Bobák A.,
Mockovčiak S.,
Sivuľka J.
Publication year - 1993
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221760221
Subject(s) - ising model , honeycomb , condensed matter physics , cluster (spacecraft) , spin (aerodynamics) , square lattice ising model , phase transition , square (algebra) , cubic crystal system , physics , simple (philosophy) , operator (biology) , phase (matter) , statistical physics , mathematics , chemistry , thermodynamics , quantum mechanics , computer science , geometry , philosophy , biochemistry , epistemology , repressor , transcription factor , gene , programming language
One‐ and two‐spin cluster approximations employing the differential operator technique are applied to study the second‐order phase boundaries for a quenched site‐diluted spin‐1 Ising model. The critical concentration below which the transition temperature reduces to zero is determined for the honeycomb, square, and simple cubic lattices. The results are compared to those of the site‐diluted spin‐1/2 Ising model.