1995/12/04 by Anders W. Sandvik, A. W. Sandvik, Elbio Dagotto +2 · 1 citation
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #Theoretical and Computational Physics #cond-mat
paper · pdf · doi:10.1103/physrevb.53.r2934
11 pages (Revtex) + 3 uuencoded ps files. To appear in Phys. Rev. B, Rapid Comm
arxiv created 1995/12/04 · openalex publication_date 1996/02/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The S=(1)/(2) Heisenberg antiferromagnet in the ladder geometry is studied as a model for the spin degrees of freedom of SrCu2O3. The susceptibility and the spin-echo decay rate are calculated using a quantum Monte Carlo technique, and the spin-lattice relaxation rate is obtained by maximum-entropy analytic continuation of imaginary-time correlation functions. All calculated quantities are in reasonable agreement with experimental results for SrCu2O3 if the exchange coupling J\ensuremath≈850 K. However, for the susceptibility fit an anomalously low factor is required.