Universal Luttinger-Liquid excitations of a strong-leg spin ladder

DOI

Quantum field theory provides us with analytic predictions stating that the low-energy properties of any gapless 1D spin systems are universal, regardless of the underlying Hamiltonian. Due to recent progress in neutron instrumentation and the discovery of clean realizations of low-energy 1D Hamiltonians, we are now able to test these predictions in detail. We propose to study the universal temperature-scaling in the spin-ladder system DIMPY. Recent comprehensive studies (such as very fruitful experiments at LET) in combination with numerical DMRG calculations proved that this material is an almost perfect realization of a spin-ladder Hamiltonian. We propose to measure the low-energy spectrum (Ei < 1.5 meV) as a function of temperature (1.5K < T < 10K) in the field-induced Luttinger-Liquid regime with the LET spectrometer. We apply for 8 days of beam time. A cryomagnet is required.

Identifier
DOI https://doi.org/10.5286/ISIS.E.59115129
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/59115129
Provenance
Creator Dr David Schmidiger; Professor Andrey Zheludev; Dr Tatiana Guidi; Dr Kirill Povarov; Ms Nicole Reynolds; Dr Rob Bewley
Publisher ISIS Neutron and Muon Source
Publication Year 2017
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 Natural Sciences; Physics
Temporal Coverage Begin 2014-03-17T00:00:00Z
Temporal Coverage End 2014-03-26T00:00:00Z