Phys. Rev. B 56, 13681–13684 (1997)Nuclear relaxation in the spin-1/2 antiferromagnetic chain compound Sr2CuO3: Comparison between theories and experimentsReceived 16 June 1997; published in the issue dated 1 December 1997 The NMR relaxation data on Sr2CuO3 [Phys. Rev. Lett. 76, 4612 (1996)] are reexamined and compared with the analytic theory of the dynamic susceptibility in the S=1/2 antiferromagnetic Heisenberg chain including multiplicative logarithmic corrections [Phys. Rev. Lett. 78, 539 (1997)]. Comparisons of the spin-lattice and the Gaussian spin-echo decay rates (1/T1 and 1/T2G) and their ratio all show good quantitative agreement. Our results demonstrate the importance of the logarithmic corrections in the analysis of experimental data for quasi-one-dimensional systems and indicate that the dynamics of Sr2CuO3 is well described by an S=1/2 one-dimensional Heisenberg model with a nearest-neighbor exchange. © 1997 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.56.13681
DOI:
10.1103/PhysRevB.56.13681
PACS:
75.10.Jm, 75.40.Gb, 76.60.Es, 76.60.Lz
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