[Landau ITP Seminars] Colloquium Friday 01.04.2022

[Serge Krashakov]

Уважаемые коллеги!

В пятницу 1 апреля в 11:30 состоится коллоквиум, на котором будет 
заслушан доклад:

Dmitri K. Efetov (LMU Munich, Germany)
*Plethora of Many-Body Ground States in Magic Angle Twisted Bilayer 
Graphene*

Twist-angle engineering of 2D materials has led to the recent 
discoveries of novel many-body ground states in moiré systems such as 
correlated insulators, unconventional superconductivity, strange metals, 
orbital magnetism and topologically nontrivial phases. These systems are 
clean and tuneable, where all phases can coexist in a single device, 
which opens up enormous possibilities to address key questions about the 
nature of correlation induced superconductivity and topology, and allows 
to create entirely novel quantum phases with enhanced interactions. In 
this talk we will introduce some of the main concepts underlying these 
systems, concentrating on magic angle twisted bilayer graphene (MATBG) 
and show how symmetry-broken states emerge at all integer electron 
fillings [1]. We further will discuss recent experiments including 
screened interactions [2], Chern insulators [4], magnetic Josephson 
junctions [4], quantum criticality [5], re-entrant correlated insulators 
at high magnetic fields [6] and discuss some of the avenues for novel 
quantum sensing applications [7].

[1] Nature, 574, 653 (2019).
[2] Nature, 583, 375–378 (2020).
[3] Nature Physics, 17, 710 (2021).
[4] arXiv:2110.01067 (2021).
[5] arXiv:2108.07753 (2021).
[6] arXiv:2201.09260 (2021).
[7] arXiv:2111.08735 (2021).


ID и пароль онлайн-трансляции в Zoom те же, что и для предыдущих 
трансляций докладов на Ученом совете:
https://zoom.us/j/96899364518?pwd=MzBsR2lYT0lYL2x2b1oyNU9LeWlWUT09
Meeting ID: 968 9936 4518
Пароль: 250319

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