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UID:69e0129b51222
DTSTAMP:20260415T183507
DTSTART:20140224T113000
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URL:https://murmitoyen.com/events/vanille/udem/detail/341252
LOCATION:Université de Montréal - Pavillon J.-Armand-Bombardier\, 5155\, 
 chemin de la rampe \, Montréal\, QC\, Canada\, H3T 2B2
SUMMARY:New Routes to Quantum Spin Liquid Physics – Jeffrey Quilliam\, Sh
 erbrooke
DESCRIPTION:Jeffrey Quilliam\, Département de Physique\, Université de Sh
 erbrooke\, Sherbrooke\, QC\, CanadaFor many years\, physicists have search
 ed for the elusive quantum spin liquid (QSL) state – a  disordered\, lo
 ng-range entangled ground state of a magnetic material induced by quantum 
 fluctuations and frustration. Most often\, this search has concentrated on
  highly  frustrated lattices\, such as the kagome lattice\, and on spin-1
 /2 materials. However\, here I will present two new avenues for the discov
 ery of QSL states. In one case\, orbital degrees of freedom appear to play
  a crucial role in an otherwise frustration-free honeycomb lattice. In the
  second case\, spin-1 moments appear to be essential to generating a spin 
 liquid ground state on a triangular lattice. Specifically\, I will presen
 t local-probe measurements\, µSR and NMR\, on these materials\, measureme
 nts that allow us to separate intrinsic magnetic properties from impurity 
 effects and to probe the basic spin excitations out of these apparent spin
  liquid ground states.Site web du groupe du  Prof. QuilliamCette confére
 nce est présentée par le RQMP Versant Nord du Département de physique 
 de l'Université de Montréal et le Département de génie physique de Pol
 ytechnique Montréal.
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