P.C. Pattnaik, D.M. Newns
Physical Review B
The global phase diagram of the S=1 Ising model in a transverse field is studied using a mean-field approximation. The critical behavior has also been considered by real-space renormalization-group techniques. This model is used to analyze the phase diagram of weakly coupled (J J <<1) classical Blume-Emery-Griffith chains. It is found that such systems display a first-order transition only in a very limited range of their parameters. © 1981 The American Physical Society.
P.C. Pattnaik, D.M. Newns
Physical Review B
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MRS Spring Meeting 1999
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