Spin dynamics along the chain direction in an S =3/2, quasi-one-dimensional Heisenberg antiferromagnet CsVCl3
S. Itoh, Kazuhisa Kakurai, M. Arai +1 more
Inelastic neutron scattering experiments investigating the spin dynamics along the chain direction of an S = 3 / 2 quasi-one-dimensional Heisenberg antiferromagnet CsVCl 3 were performed up to the zone boundary energy. The authors observed the quantum renormalization in the exchange constant and found that the scattering function cannot be described by either the classical delta -function or the quantum Heisenberg model for S = 1 / 2 . The spin excitations have apparent linewidths and they are compared with the theory of the classical isotropic Heisenberg system at finite temperatures.
Journal of Physics Condensed Matter•Sep 6, 1993•8 citations