Zitzler, R. and Pruschke, Thomas and Bulla, R. (2002) Magnetism and phase separation in the ground state of the Hubbard model. EUROPEAN PHYSICAL JOURNAL B, 27 (4). pp. 473-481. ISSN 1434-6028
Full text not available from this repository. (Request a copy)Abstract
We discuss the ground state magnetic phase diagram of the Hubbard model off half filling within the dynamical mean-field theory. The effective single-impurity Anderson model is solved by Wilson's numerical renormalization group calculations, adapted to symmetry broken phases. We find a phase separated, antiferromagnetic state up to a critical doping for small and intermediate values of U, but could not stabilize a Neel state for large U and finite doping. At very large U, the phase diagram exhibits an island with a ferromagnetic ground state. Spectral properties in the ordered phases are discussed.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HIGH-TEMPERATURE SUPERCONDUCTORS; NUMERICAL RENORMALIZATION-GROUP; T-J MODEL; ANDERSON MODEL; INFINITE DIMENSIONS; FERROMAGNETISM; DIAGRAM; ALLOYS; PARTICLE; FIELD; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 Oct 2021 11:33 |
| Last Modified: | 25 Oct 2021 11:33 |
| URI: | https://pred.uni-regensburg.de/id/eprint/40188 |
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