Abstract
NMR frequency shift has been measured at and sites in a single crystal of the one-dimensional spin-1 antiferromagnet . Parameters in the single-ion spin Hamiltonian were determined from the orbital (van Vleck) shift at V sites. Temperature dependence of the spin shift (spin susceptibility) is consistent with the theoretical prediction and the magnitude of the Haldane gap determined from neutron-scattering experiments.
- Received 17 July 1995
DOI:https://doi.org/10.1103/PhysRevB.52.R13087
©1995 American Physical Society