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[Fizinfo] BME Elm. Fiz. Szeminárium, nov. 26, Louk Rademaker

From: Janos Asboth <asboth.janos AT ttk.bme.hu>
To: fizinfo AT lists.kfki.hu, elmfiz.oktatok-kutatok AT lists.bme.hu, elmfiz.hallgatok AT lists.bme.hu, fizika.oktatok-kutatok AT lists.bme.hu, fizika.hallgatok AT lists.bme.hu, Louk Rademaker <louk.rademaker AT gmail.com>
Subject: [Fizinfo] BME Elm. Fiz. Szeminárium, nov. 26, Louk Rademaker
Date: Wed, 24 Nov 2021 20:22:01 +0100
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Meghívó

BME Elméleti Fizika Szeminárium,
nov. 26. péntek 10h15,
hibrid formátum:

1111 Budapest, Budafoki út 8., BME F III. magasföldszint 01.,
Elméleti Fizika Tanszék szemináriumi szoba
és
online
<https://teams.microsoft.com/l/meetup-join/19%3ae1a26210676841cdbb27bb01cf353392%40thread.tacv2/1637701271422?context=%7b%22Tid%22%3a%226a3548ab-7570-4271-91a8-58da00697029%22%2c%22Oid%22%3a%22c7eaf7d2-684b-4597-b217-6a9121400219%22%7d>
a Microsoft Teamsben

Louk Rademaker (Universite de Geneve, Dept. Theor. Phys.):

Symmetry breaking and Chern insulators in twisted graphene structures

Twisted bilayer graphene (tBG) and variants like twisted monolayer-bilayer
graphene (tMBG) were proposed to be a platform for strongly correlated
physics akin to the cuprate family. However, I will show that many of the
observed interacting phenomena can be explained in terms of breaking of
spin/valley symmetry. This can lead to a quantum anomalous Hall effect in
the absence of a field, as I will show for tMBG [1]. In large magnetic
fields the same spin- valley symmetry breaking leads to a series of Chern
insulator states [2]. Finally, I will briefly discuss the possibility of
genuine strong correlated physics in Moiré structures.

[1] Rademaker, Protopopov, Abanin, Phys. Rev. Research, 2, 033150 (2020).
[2] Saito, Ge, Rademaker, Watanabe, Taniguchi, Abanin, Young, Nature
Physics, 108, 12233 (2021).
Minden érdeklődőt szeretettel várunk.

Asbóth János
szemináriumi koordinátor

[Fizinfo] BME Elm. Fiz. Szeminárium, nov. 26, Louk Rademaker, Janos Asboth, 11/24/2021