Dynamical Correlations of the Kagome S=1/2 Heisenberg Quantum Antiferromagnet

Details Dynamical Correlations of the Kagome S=1/2 Heisenberg Quantum Antiferromagnet Dynamical Correlations of the Kagome S=1/2 Heisenberg Quantum Antiferromagnet

2009-01-08

arxiv.org/abs/0901.1065v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures

Scientific paper

We determine dynamical response functions of the S=1/2 Heisenberg quantum antiferromagnet on the kagome lattice based on large-scale exact diagonalizations combined with a continued fraction technique. The dynamical spin structure factor has important spectral weight predominantly along the boundary of the extended Brillouin zone and energy scans reveal broad response extending over a range of 2 \sim 3J concomitant with pronounced intensity at lowest available energies. Dispersive features are largely absent. Dynamical singlet correlations -- which are relevant for inelastic light probes -- reveal a similar broad response, with a high intensity at low frequencies omega/J \lesssim 0.2J. These low energy singlet excitations do however not seem to favor a specific valence bond crystal, but instead spread over many symmetry allowed eigenstates.

Affiliated with

Also associated with

No associations

Rating

Dynamical Correlations of the Kagome S=1/2 Heisenberg Quantum 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 Dynamical Correlations of the Kagome S=1/2 Heisenberg Quantum Antiferromagnet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamical Correlations of the Kagome S=1/2 Heisenberg Quantum Antiferromagnet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-62833