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SUMMARY:Quantum arrest and release and entanglement in anisotropic dipolar
  magnets
DTSTART:20160324T103000
DTEND:20160324T113000
DTSTAMP:20260916T050022Z
UID:0aec942b8aa22964c6d52d4768972190b10b74c6c0212e30046ab0f2
CATEGORIES:Conferences - Seminars
DESCRIPTION:Moshe Schechter\, Ben-Gurion University of the Negev\, Beershe
 ba\, Israel\nAnisotropic dipolar magents\, and specifically LiHoF4\, are a
 rchetypal quantum magnets. The relatively weak spin-spin interaction allow
 s for appreciable quantum fluctuations. Furthermore\, upon dilution both f
 erromagnetic and spin glass phases are realized\, and effective longitudin
 al fields which are locally random can be induced by the application of a 
 transverse field. This allows the study of a plethora of phenomena related
  to quantum magnetism of disordered systems. In this talk I will discuss t
 wo related topics: (i) The disordering of ferromagnets with competing inte
 ractions by random fields\, and its novelty in comparison to the standard 
 disordering and to the Imry-Ma mechanism. (ii) Quantum arrest and release 
 in the dynamics of coupled Ho spins upon the enhancement of quantum fluctu
 ations\, and its correspondence to eletron electron and electronuclear spi
 n engtanglement. Relation to existing and future experiments will be discu
 ssed.
LOCATION:aquarium (PH L1 503) http://plan.epfl.ch/?zoom=21&recenter_y=5864
 271.01232&recenter_x=731411.61169&layerNodes=fonds\,batiments\,labels\,inf
 ormation\,parkings_publics\,arrets_metro\,transports_publics&floor=1
STATUS:CONFIRMED
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