title: Non-classical behaviour in an S = 5/2 chain with next nearest neighbour interactions observed from the inelastic neutron scattering of Mn(2)(OD)(2)(C(4)O(4)).
abstract: Low-dimensional and frustrated magnetic systems often show interesting quantum phenomena. The use of large moments such as S = 5/2 within such materials is uncommon, partly due to the evidence that the large manifold of states associated with these centres results in pseudo-classical behaviour. Here we report on the inelastic neutron scattering of Mn(2)(OD)(2)(C(4)O(4)), a well-isolated chain with next nearest neighbour interactions. We observe a magnetic excitation spectrum below 30 K whose characteristics resemble those of quantum spin singlets. Inelastic neutron scattering from a powdered sample is shown to yield a great deal of information about the nature of these effects.
authors.affiliation: University Chemical Laboratory, Lensfield Road, Cambridge CB2 1EW, UK. Forschungsneutronenquelle Heniz Maier-Leibnitz (FRM II), Technische Universität München, Lichtenbergstraße 1, 85747 Garching, Germany.
authors.forename: Richard A
authors.initials: RA
authors.lastname: Mole
authors.forename: John A
authors.initials: JA
authors.lastname: Stride
authors.forename: Tobias
authors.initials: T
authors.lastname: Unruh
authors.forename: Paul T
authors.initials: PT
authors.lastname: Wood