Spin-liquid versus dimerized ground states in a frustrated Heisenberg antiferromagnet

Details Spin-liquid versus dimerized ground states in a frustrated Heisenberg antiferromagnet Spin-liquid versus dimerized ground states in a frustrated Heisenberg antiferromagnet

2004-04-05

arxiv.org/abs/cond-mat/0404085v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.93.177004

We present a Density Matrix Renormalization Group (DMRG) study of the ground-state properties of spin-1/2 frustrated $J_1-J_3$ Heisenberg $n_l$-leg ladders (with $n_l$ up to 8). For strong frustration ($J_3/J_1\simeq 0.5$), both even- and odd-leg ladders display a finite gap to spin excitations, which we argue remains finite in the two-dimensional limit. In this regime, on odd-leg ladders the ground state is spontaneously dimerized, in agreement with the Lieb-Schultz-Mattis prediction, while on even-leg ladders the dimer correlations decay exponentially. The magnitude of the dimer order parameter decreases as the number of legs increases, consistent with a two-dimensional spin-liquid ground state.

Affiliated with

Also associated with

No associations

Rating

Spin-liquid versus dimerized ground states in a frustrated Heisenberg antiferromagnet 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 Spin-liquid versus dimerized ground states in a frustrated Heisenberg antiferromagnet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin-liquid versus dimerized ground states in a frustrated Heisenberg antiferromagnet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-666374