Low energy excitations in solid 4He

DOI

The atoms in solid helium are weakly bound and have small mass so that the overlap of their wave functions (zero point motion) is large, making it a quantum solid close to the melting curve. The properties peculiar to quantum solids remain to be discovered. In liquid helium and metals the quantum statistics resulting from this wave function overlap yield superfluidity and superconductivity. Previous neutron scattering studies have established the broad outline of the excitation spectrum at two temperatures and one density, but questions remain, in particular for low energy transfers (and low momentum transfers), and we aim to address this region of phase space in this proposal. We wish to investigate the temperature and density dependence in more detail.

Identifier
DOI https://doi.org/10.5286/ISIS.E.24079507
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/24079507
Provenance
Creator Professor Elizabeth Blackburn; Dr Oleg Kirichek; Professor John Goodkind; Mrs Tera Austrum
Publisher ISIS Neutron and Muon Source
Publication Year 2013
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 2010-06-23T08:55:30Z
Temporal Coverage End 2010-07-02T11:30:44Z