On the Phase Diagram of Spin-Polarized Attractive Hubbard Model: Weak Coupling Limit

• Authors: A. Kujawa , R. Micnas
• Languages of publication: EN

Abstracts

EN

The superfluid properties of the attractive Hubbard model in a Zeeman magnetic field, and in the weak coupling regime were investigated. The temperature and magnetic field dependences of the order parameter were analyzed. Furthermore, the temperature vs. magnetic field and temperature vs. spin polarization phase diagrams for the 2D and 3D lattices were obtained. For some parameters a reentrant transition was found.

Keywords

EN

71.10.Fd; 74.20.Rp; 71.27.+a; 71.10.Hf

Discipline

• 71.27.+a: Strongly correlated electron systems; heavy fermions
• 71.10.Fd: Lattice fermion models (Hubbard model, etc.)
• 71.10.Hf: Non-Fermi-liquid ground states, electron phase diagrams and phase transitions in model systems
• 74.20.Rp: Pairing symmetries (other than s-wave)

• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 114
• Issue: 1
• Pages: 43-50

Dates

published

2008-07

received

2007-11-06

Contributors

author

A. Kujawa

• Solid State Theory Division, Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

R. Micnas

• Solid State Theory Division, Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

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Identifiers

DOI

10.12693/APhysPolA.114.43