Abstract
The modified Kadanoff's variational method recently considered by us is applied to calculate the free energies and their derivatives for a three-dimensional Ising model with bcc structure and without external magnetic field. We find a critical point at and the associated critical indices , .
- Received 23 March 1979
DOI:https://doi.org/10.1103/PhysRevB.21.299
©1980 American Physical Society