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SUMMARY:Quantum arrest and release and entanglement in anisotropic dipolar
  magnets
DTSTART:20160324T103000
DTEND:20160324T113000
DTSTAMP:20260925T174520Z
UID:231fde3cc04737cbb568d81adeeb08022b00968ec3d2172eb0663e91
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Moshe SCHECTER (Ben-Gurion University of the Negev\, Bee
 rsheba\, Israel)\nAnisotropic dipolar magents\, and specifically LiHoF4\, 
 are archetypal quantum magnets. The relatively weak spin-spin interaction 
 allows for appreciable quantum fluctuations. Furthermore\, upon dilution b
 oth ferromagnetic and spin glass phases are realized\, and effective longi
 tudinal fields which are locally random can be induced by the application 
 of a transverse field. This allows the study of a plethora of phenomena re
 lated to quantum magnetism of disordered systems. In this talk I will disc
 uss two related topics: (i) The disordering of ferromagnets with competing
  interactions by random fields\, and its novelty in comparison to the stan
 dard disordering and to the Imry-Ma mechanism. (ii) Quantum arrest and rel
 ease in the dynamics of coupled Ho spins upon the enhancement of quantum f
 luctuations\, and its correspondence to eletron electron and electronuclea
 r spin engtanglement. Relation to existing and future experiments will be 
 discussed.
LOCATION:PH L1 503 http://plan.epfl.ch/?request_locale=en&room=ph+l1+503&d
 omain=places
STATUS:CONFIRMED
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