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SUMMARY:Investigations of strongly correlated materials by application of 
 high pressure
DTSTART:20150227T141500
DTSTAMP:20260930T223152Z
UID:4262bbc248f0331821bb4e9b5c472256ea6a8e359902eb76132bebf7
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Vasily Potapkin\, Jülich Centre for Neutron Science JCNS 
 und Peter Grünberg Institut PGI\nStrongly correlated materials are system
 s where correlations betweensuperconductors\, Mott insulators\, spintronic
  materials\, ferroelectrics\, heavy fermion materials etc. are examples of
  strongly correlated matter.\nHere I would like to show that application o
 f pressure is one of the most useful ways to study the nature of the magne
 tic state of strongly correlated matter in general and insulator to metal 
 transition (a.k.a. Mott transitions) in them in particular\, since the bal
 ance between Coulomb and kinetic energy can be tuned directly. Such invest
 igations are important for understanding of the fundamental nature of magn
 etism in solids and also for explanation of newly discovered effects like 
 superconductivity\, as tight interconnection between Mott transitions and 
 the emergency of superconductivity was repeatedly reported in a literature
  [1\,2].\nAs examples I will primarily use the results on NiO that is cons
 idered as one of the most important compounds for the field of strongly co
 rrelated materials due to two reasons: firstly\, as it was treated as a pr
 ototypical Mott insulator by N.F. Mott and co-workers[3]\; secondly\, beca
 use it is chemically one of the simplest compounds that is ideally suited 
 to be a model system to test and verify theoretical predictions and models
 . As well as couple of other systems.\nReferences:\n[1]      M.-S. Na
 m\, A. Ardavan\, S. J. Blundell\, and J. A. Schlueter\, Nature 449\, 584 (
 2007).\n[2]      P. Durand\, G. R. Darling\, Y. Dubitsky\, A. Zaopo\,
  and M. J. Rosseinsky\, Nat Mater 2\, 605 (2003).\n[3]      S. N F Mo
 tt\, Metal-Insulator Transitions\, 2nd Edition (Taylor & Francis\, 1990).
LOCATION:PH L1 503 (Aquarium) http://plan.epfl.ch/?room=PHL1503
STATUS:CONFIRMED
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