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DTSTART;TZID=Europe/Paris:20220105T113000
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CREATED:20220104T090928Z
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UID:7719-1641382200-1641387600@fermi.univ-tlse3.fr
SUMMARY:Higher-order topological insulators and superconductors and beyond (Luka Trifunovic / LPT / Seminar). – 5/01\, 11H30
DESCRIPTION:Luka Trifunovic (Université de Zurich) \nNot so long ago\, the concept of higher-order topological insulators and superconductors was mentioned for the first time in print (see Viewpoint [1]). Since then\, the concept of higher-order topology has been recognized to be key for the description of boundary phenomenology of topological crystalline insulators and superconductors. \nAlthough higher-order boundary phenomenology can exist without a topologically nontrivial bulk band structure\, recent excitement stems from the observation that it can also be a consequence of (and protected by) nontrivial bulk topology if additional crystalline symmetries are present. In this picture\, higher-order topological phases are not a new kind of topological phases\, rather they are a new type of boundary manifestation of nontrivial bulk topology. \nIn this talk\, I will introduce extrinsic and intrinsic higher-order boundary phenomenology and discuss both bulk and boundary topological classification. A new type of bulk-boundary correspondence that naturally includes a higher-order boundary phenomenology will be also discussed [2]. \n[1] https://physics.aps.org/articles/v10/132 \n[2] L Trifunovic\, PW Brouwer\, physica status solidi (b) 258 (1)\, 2000090 (2021) \n\nVisio
URL:https://fermi.univ-tlse3.fr/event/higher-order-topological-insulators-and-superconductors-and-beyond-luka-trifunovic-lpt-seminar-5-01-11h30/
LOCATION:Visio
CATEGORIES:Events,LPT,Seminars
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