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TZID:Europe/Paris
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BEGIN:VEVENT
UID:1-526@lptms.universite-paris-saclay.fr
DTSTART:20171017T110000Z
DTEND:20171017T120000Z
DTSTAMP:20170918T111634Z
URL:https://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lpt
 ms-thierry-jolicoeur/
SUMMARY:Séminaire du LPTMS: Thierry Jolicoeur - LPTMS\, salle 201\, 2ème 
 étage\, Bât 100\, Campus d'Orsay - 17 Oct 17 11:00
DESCRIPTION:Quantum coherence in bilayer graphene in the quantum Hall regim
 e\nThierry Jolicoeur (LPTMS\, Université Paris-Sud)\nBilayer graphene und
 er a magnetic field has a central octet of quasi-degenerate Landau levels 
 due to spin\, valley\, and orbital degeneracies. This set of zero-energy L
 andau level is resolved into several incompressible states whose detailed 
 nature is still elusive. A Hartree-Fock treatment of a realistic tight-bin
 ding four-band model can be used to understand the quantum ferromagnetism 
 phenomena expected for integer fillings of the octet levels.  I will disc
 uss various phase diagrams as a function of applied bias and magnetic fiel
 d. In some corners of these diagrams are interesting phases with quantum c
 oherence involving valley or orbital degrees of freedom.\n\nReference:\n\n
 	Angelika Knothe and Thierry Jolicoeur\, Phase diagram of a graphene bilay
 er in the zero-energy Landau level\, Phys. Rev. B 94\, 235149 (2016).\n
CATEGORIES:seminars
LOCATION:LPTMS\, salle 201\, 2ème étage\, Bât 100\, Campus d'Orsay\, 15 
 Rue Georges Clemenceau\, Orsay\, 91405\, France
GEO:48.698185;2.181768
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=15 Rue Georges Clemenceau\,
  Orsay\, 91405\, France;X-APPLE-RADIUS=100;X-TITLE=LPTMS\, salle 201\, 2è
 me étage\, Bât 100\, Campus d'Orsay:geo:48.698185,2.181768
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