Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1998-05-25
Physics
Condensed Matter
Strongly Correlated Electrons
revised version, to be published
Scientific paper
10.1016/S0921-4526(98)01021-7
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=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-susceptiblity 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.
Keller Julien
Maier Th.
Pruschke Th.
Zoelfl M. B.
No associations
LandOfFree
Magnetic properties of the three-band Hubbard model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Magnetic properties of the three-band Hubbard model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic properties of the three-band Hubbard model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-142790