Maier, Thomas and Zoelfl, M. B. and Pruschke, T. and Keller, J. (1999) Magnetic properties of the three-band Hubbard model. EUROPEAN PHYSICAL JOURNAL B, 7 (3). pp. 377-383. ISSN 1434-6028,
Full text not available from this repository. (Request a copy)Abstract
We present magnetic properties of the three-band Hubbard model in the para- and antiferromagnetic phase on a hypercubic lattice calculated with the Dynamical Mean-Field Theory (DMFT). To allow for solutions with broken spin-symmetry we extended the approach to lattices with AB-like structure. Above a critical sublattice magnetization m(d) approximate to 0.5 one can observe rich structures in the spectral-functions similar to the t-J model which can be related to the well known bound states for one hole in the Neel-background. In addition to the one-particle properties we discuss the static spin-susceptibility in the paramagnetic state at the points q = 0 and q = (pi, pi, pi...) for different dopings delta. The delta-T-phase-diagram exhibits an enhanced stability of the antiferromagnetic state for electron-doped systems in comparison to hole-doped. This asymmetry in the phase diagram is in qualitative agreement with experiments for high-T-c, materials.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | T-J MODEL; MEAN-FIELD THEORY; HIGH DIMENSIONS; SUPERCONDUCTIVITY; FERMIONS; LATTICE; OXIDES; PHASE; HOLE; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Nov 2022 10:32 |
| Last Modified: | 22 Nov 2022 10:32 |
| URI: | https://pred.uni-regensburg.de/id/eprint/48543 |
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