Transfer matrix analysis of the two-dimensional ANNNI model |
| |
Authors: | W Pesch J Kroemer |
| |
Institution: | (1) Physikalisches Institut der Universität Bayreuth, Universitätsstrasse 30, D-8580 Bayreuth, Germany |
| |
Abstract: | The two-dimensional axial next-nearest neighbour Ising (ANNNI) model is studied for the first time by a transfer matrix method for semi-infinite strips (N× ;N 13). One obtains the thermodynamic properties and, more important, the correlation functions, which display directly the various magnetic structures. In one part of the phase diagram where a disorder line is believed to follow closely the ferromagnetic transition line the critical exponents appear to deviate from the expected ones. ForN 13 a variational procedure is proposed. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|