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SUMMARY:Hidden\, Entangled and Resonating Orders
DTSTART:20191018T151500
DTSTAMP:20260407T045646Z
UID:9841d9a654a7fd73ab35e8ba7ee6eea28c238eae43050866f07a0d36
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof Nicola Spaldin from Department of Materials ETH Zurich\nT
 he concept of magnetic dipolar order -- for example ferro\, ferri or antif
 erromagnetic -- is at the core of our understanding of the behavior of mag
 netic materials\, and is invaluable in selecting and tailoring them for ap
 plications. Sometimes\, however\, magnetic materials surprise us\, and beh
 ave in ways that can not be captured within our established paradigms\, su
 ggesting additional kinds of order that are not yet identified. The indica
 tors and implications of such ``hidden order'' are the subject of this tal
 k. Using multiferroic composite order consisting of coupled electric and m
 agnetic dipoles as a model\, I will first discuss hints of static hidden o
 rder in existing materials\, the intriguing behaviors that such hidden ord
 er causes\, and experimental efforts that could unambiguously reveal it. N
 ext\, I will describe new physics that can emerge when the order is explic
 itly quantum mechanical\, specifically the occurrence and signatures of mu
 ltiferroic quantum criticality. Finally\, I will explore dynamical order\,
  in which thermal effects or an external drive cause a time evolution of t
 he coupled quantum mechanical wavefunctions. I will outline promising futu
 re directions in the heroic effort to unearth\, explain and exploit these 
 hidden\, entangled and resonating orders\, which will doubtless keep us en
 tertained for many years to come.\n \n 
LOCATION:CE 1 5 https://plan.epfl.ch/?room==CE%201%205
STATUS:CONFIRMED
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