Magnetic excitation in triangular latticce antiferromagnet alpha-CaCr2O4

DOI

The triangular Heisenberg antiferromagnet is the classic example of the frustrated magnet, here the ground state forms a non-collinear 120° structure. A number of different theoretical techniques reveal that the spectrum is renormalized downward from the energies predicted by linear spin-wave theory and that the excitations are strongly damped. Here we wish to investigate the excitation spectrum of the distorted triangular lattice antiferromaget alpha-CaCr2O4 where unexpectedly the distortion is such that it maintain the 120° structure over a large range of exchange interactions. The data will be used to distinguish between models of the exchange interactions and look for departures from linear spin-wave theory.

Identifier
DOI https://doi.org/10.5286/ISIS.E.24088161
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/24088161
Provenance
Creator Dr Bella Lake; Dr Sándor Tóth; Dr Nazmul Islam
Publisher ISIS Neutron and Muon Source
Publication Year 2014
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Representation
Resource Type Dataset
Discipline Photon- and Neutron Geosciences
Temporal Coverage Begin 2011-10-25T09:56:47Z
Temporal Coverage End 2011-11-23T15:25:24Z