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UID:69e06de371af1
DTSTAMP:20260416T010435
DTSTART:20131111T113000
SEQUENCE:0
TRANSP:OPAQUE
DTEND:20131111T123000
URL:https://murmitoyen.com/events/vanille/udem/detail/278280
LOCATION:Université de Montréal - Pavillon J.-Armand-Bombardier\, 5155\, 
 chemin de la rampe \, Montréal\, QC\, Canada\, H3T 2B2
SUMMARY: Spin-orbit driven physics in iridate materials  – Young-June Kim
 \, UofT
DESCRIPTION:Young-June Kim\, Department of Physics\, University of Toronto\
 , Toronto\, ON\, CanadaAn overview of spin-orbit driven magnetism in irida
 te materials will be given with the emphasis on experimental investigation
 s using various X-ray spectroscopic methods. Unlike the first-row transiti
 on metal compounds\, orbital angular momentum is not quenched for the Ir4+
  ions in iridates. The spin-orbit coupling instead strongly couples spin a
 nd orbital moment\, giving rise to the magnetism described with a total an
 gular momentum J=1/2. What makes iridates unique is that the magnetic inte
 raction between these J=1/2 moments can have different magnitude depending
  on the spatial bond direction\, unlike the well-known Heisenberg interact
 ion. On a honeycomb lattice\, such bond-dependent interactions produce the
  so-called Kitaev model\, which is drawing much attention from both the ma
 gnetism and quantum computing community. The ground state of the Kitaev mo
 del is a quantum spin liquid phase\, which is an example of a topological 
 order characterized by long-range quantum entanglement. Using x-ray absorp
 tion spectroscopy and resonant inelastic X-ray scattering (RIXS)\, we illu
 strate the important role played by the spin-orbit coupling in a model hon
 eycomb lattice iridate Na2IrO3. Site web du groupe de  Prof. Kim'sCette c
 onférence est présentée par le RQMP Versant Nord du Département de ph
 ysique de l'Université de Montréal et le Département de génie physique
  de Polytechnique Montréal.
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