A variational coupled-cluster study of magnon-density-wave excitations in quantum antiferromagnets

Details A variational coupled-cluster study of magnon-density-wave excitations in quantum antiferromagnets A variational coupled-cluster study of magnon-density-wave excitations in quantum antiferromagnets

2006-06-30

arxiv.org/abs/cond-mat/0606813v2

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 1 figure

Scientific paper

10.1103/PhysRevB.74.212401

We extend recently proposed variational coupled-cluster method to describe excitation states of quantum antiferromagnetic bipartite lattices. We reproduce the spin-wave excitations (i.e., magnons with spin $\pm 1$). In addition, we obtain a new, spin-zero excitation (magnon-density waves) which has been missing in all existing spin-wave theories. Within our approximation, this magnon-density-wave excitation has a nonzero energy gap in a cubic lattice and is gapless in a square lattice, similar to those charge-density-wave excitations (plasmons) in quantum electron gases.

Affiliated with

Also associated with

No associations

Rating

A variational coupled-cluster study of magnon-density-wave excitations in quantum antiferromagnets 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 A variational coupled-cluster study of magnon-density-wave excitations in quantum antiferromagnets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A variational coupled-cluster study of magnon-density-wave excitations in quantum antiferromagnets will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-117174