Dynamical Spin Response Functions for Heisenberg Ladders

Details Dynamical Spin Response Functions for Heisenberg Ladders Dynamical Spin Response Functions for Heisenberg Ladders

1997-12-12

arxiv.org/abs/cond-mat/9712131v1

Phys.Rev. B57 (1998) 10603-10608

Physics

Condensed Matter

Revtex, 3 figures

Scientific paper

10.1103/PhysRevB.57.10603

We present the results of a numerical study of the 2 by L spin 1/2 Heisenberg ladder. Ground state energies and the singlet-triplet energy gaps for L = (4-14) and equal rung and leg interaction strengths were obtained in a Lanczos calculation and checked against earlier calculations by Barnes et al. (even L up to 12). A related moments technique is then employed to evaluate the dynamical spin response for L=12 and a range of rung to leg interaction strength ratios (0 - 5). We comment on two issues, the need for reorthogonalization and the rate of convergence, that affect the numerical utility of the moments treatment of response functions.

Affiliated with

Also associated with

No associations

Rating

Dynamical Spin Response Functions for Heisenberg Ladders 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 Spin Response Functions for Heisenberg Ladders, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamical Spin Response Functions for Heisenberg Ladders will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-614278