Magnetic properties of the 2D t-t'-Hubbard model

Details Magnetic properties of the 2D t-t'-Hubbard model Magnetic properties of the 2D t-t'-Hubbard model

1996-12-19

arxiv.org/abs/cond-mat/9612181v1

Physics

Condensed Matter

2 pages, 3 Postscript figure, submitted to Int. Conf. M2S-HTSC-V Beijing 97, to appear in Physica C

Scientific paper

10.1016/S0921-4534(97)00967-2

The two-dimensional (2D) t-t'-Hubbard model is studied within the slave-boson (SB) theory. At half-filling, a paramagnetic to antiferromagnetic phase transition of first order at a finite critical interaction strength U_c(t'/t) is found. The dependences on U/t and t'/t of the sublattice magnetization and of the local magnetic moment are calculated. Our results reasonably agree with recent (Projector) Quantum Monte Carlo data. The SB ground-state phase diagram reveals a t'-induced electron-hole asymmetry, and, depending on the ratio t'/t, the antiferromagnetic or ferromagnetic phases are stable down to U=0 at a critical hole doping.

Affiliated with

Also associated with

No associations

Rating

Magnetic properties of the 2D t-t'-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 2D t-t'-Hubbard model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic properties of the 2D t-t'-Hubbard model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-37275