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On-site magnetization in open antiferromagnetic chains: a classical analysis versus NMR experiments in a spin-1 compound
Authors: S. Botti, A. Rosso, R. Santachiara, and F. Tedoldi
Ref.: Phys. Rev. B 63, 012409 (2001)
Abstract: The response of an open spin chain with isotropic antiferromagnetic interactions to a uniform magnetic field is studied by classical Monte Carlo simulations. It is observed how the induced on-site magnetization is nonuniform, due to the occurrence of edge staggered terms which decay exponentially over a distance equal to the zero-field correlation length of the infinite chain. The total magnetic moment associated to each staggered term is found to be about half of the original single-spin magnitude and to decrease as the inverse of temperature (i.e., to behave as a Curie-like moment). The numerical results are compared to recent NMR findings in spinless-doped Y2BaNiO5; the remarkable agreement found shows that, for temperatures above the Haldane gap, the classical approach gives a correct picture of the boundary effects observed in the Heisenberg S=1 chain.
Citations: 4 (Google scholar)
DOI: 10.1103/PhysRevB.63.012409
Bibtex:
@article{Botti_2000,
doi = {10.1103/physrevb.63.012409},
url = {https://doi.org/10.1103%2Fphysrevb.63.012409},
year = 2000,
month = {dec},
publisher = {American Physical Society ({APS})},
volume = {63},
number = {1},
author = {S. Botti and A. Rosso and R. Santachiara and F. Tedoldi},
title = {On-site magnetization in open antiferromagnetic chains: A classical analysis versus {NMR} experiments in a spin-1 compound},
journal = {Physical Review B}
}