Phase diagram of the Heisenberg antiferromagnet with four-spin interactions

Details Phase diagram of the Heisenberg antiferromagnet with four-spin interactions Phase diagram of the Heisenberg antiferromagnet with four-spin interactions

2009-03-09

arxiv.org/abs/0903.1630v2

J. Phys.: Condens. Matter 22, 016006 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

LaTeX 2e, 7 pages, 8 figures

Scientific paper

We study the quantum phase diagram of the Heisenberg planar antiferromagnet with a subset of four-spin ring exchange interactions, using the recently proposed heirarchical mean-field approach. By identifying relevant degrees of freedom, we are able to use a single variational anzatz to map the entire phase diagram of the model and uncover the nature of its various phases. It is shown that there exists a transition between a N\'eel state and a quantum paramagnetic phase, characterized by broken translational invariance. The non-magnetic phase preserves the lattice rotational symmetry, and has a correlated plaquette nature. Our results also suggest that this phase transition can be properly described within the Landau paradigm.

Affiliated with

Also associated with

No associations

Rating

Phase diagram of the Heisenberg antiferromagnet with four-spin interactions 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 Phase diagram of the Heisenberg antiferromagnet with four-spin interactions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase diagram of the Heisenberg antiferromagnet with four-spin interactions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-96312