Static approximation for the Hubbard model: Magnetic phase transitions
- 1 October 1976
- journal article
- research article
- Published by Wiley in Physica Status Solidi (b)
- Vol. 77 (2) , 717-724
- https://doi.org/10.1002/pssb.2220770236
Abstract
Magnetic phase transitions are studied within the Hubbard model using the static singlesite approximation for zero temperature and the Bragg‐Williams theory. For a half‐filled bend, the antiferromagnetic transition comes out reasonably except for small correlation energies. However, the static approximation does not yield ferromagnetism even for large correlation energies.Keywords
This publication has 21 references indexed in Scilit:
- Antiferromagnetic Ground State in the-Band Hubbard ModelPhysical Review Letters, 1975
- Phase diagram for the conventional Hubbard model systemPhysica Status Solidi (b), 1975
- Static approximation for the Hubbard model: Paramagnetic phase at finite temperaturesPhysica Status Solidi (b), 1975
- On the Static Approximation for the Hubbard Model. I. General ConsiderationsPhysica Status Solidi (b), 1974
- High-Temperature Properties of the Half-Filled-Band Hubbard ModelPhysical Review B, 1973
- Ferromagnetismus in schmalen EnergiebändernThe European Physical Journal A, 1973
- Thermodynamics of the neutral Hubbard modelThe European Physical Journal A, 1972
- The ground state of the neutral Hubbard modelThe European Physical Journal A, 1971
- Paramagnetic and Antiferromagnetic Phases in the Half-Filled Narrow Energy BandPhysical Review B, 1971
- Stability Theory of the Magnetic Phases for a Simple Model of the Transition MetalsPhysical Review B, 1966