Year: 1998
Type: article
Abstract: The quantum pyrochlore antiferromagnet is studied by perturbative expansions and exact diagonalization of small clusters. We find that the ground state is a spin-liquid state: The spin-spin correlation functions decay exponentially with distance and the correlation length never exceeds the interatomic distance. The calculated magnetic neutron diffraction cross section is in very good agreement with experiments performed on $\mathrm{Y}(\mathrm{Sc}){\mathrm{Mn}}_{2}$. The low energy excitations are singlet-singlet ones, with a finite spin gap.
Source: Physical Review Letters
Authors: B. Canals, C. Lacroix
Institution: Centre National de la Recherche Scientifique
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2101653753