Reals-space renormalization group study of the anisotropic antiferromagnetic Heisenberg model on the square lattice

Details Reals-space renormalization group study of the anisotropic antiferromagnetic Heisenberg model on the square lattice Reals-space renormalization group study of the anisotropic antiferromagnetic Heisenberg model on the square lattice

2000-06-22

arxiv.org/abs/cond-mat/0006345v1

Physics

Condensed Matter

Statistical Mechanics

5 pages, 4 figures included. To appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.62.5742

In this work we apply two different real-space renormalization-group (RSRG) approaches to the anisotropic antiferromagnetic spin-1/2 Heisenberg model on the square lattice. Our calculations allow for an approximate evaluation of the $T$ vs. $\Delta$ phase-diagram: the results suggest the existence of a critical value of $\Delta>0$, at which the critical temperature goes to zero, and the presence of reentrant behavior on the critical line between the ordered and disordered phases. This whole critical line is found to belong to the same universality class as the Ising model. Our results are in accordance with previous RSRG approaches but not with numerical simulations and spin-wave calculations.

Affiliated with

Also associated with

No associations

Rating

Reals-space renormalization group study of the anisotropic antiferromagnetic Heisenberg model on the square lattice 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 Reals-space renormalization group study of the anisotropic antiferromagnetic Heisenberg model on the square lattice, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reals-space renormalization group study of the anisotropic antiferromagnetic Heisenberg model on the square lattice will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-208854