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Уважаемые коллеги!<br>
<br>
В пятницу 1 апреля в 11:30 состоится коллоквиум, на котором будет
заслушан доклад:<br>
<br>
Dmitri K. Efetov (LMU Munich, Germany)<br>
<font size="5"><b>Plethora of Many-Body Ground States in Magic Angle
Twisted Bilayer Graphene</b></font><br>
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<div class="abstract tex">
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]. <br>
<br>
[1] Nature, 574, 653 (2019). <br>
[2] Nature, 583, 375–378 (2020). <br>
[3] Nature Physics, 17, 710 (2021). <br>
[4] arXiv:2110.01067 (2021). <br>
[5] arXiv:2108.07753 (2021). <br>
[6] arXiv:2201.09260 (2021). <br>
[7] arXiv:2111.08735 (2021).
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ID и пароль онлайн-трансляции в Zoom те же, что и для предыдущих
трансляций докладов на Ученом совете:<br>
<div class="moz-cite-prefix"> <a class="moz-txt-link-freetext"
href="https://zoom.us/j/96899364518?pwd=MzBsR2lYT0lYL2x2b1oyNU9LeWlWUT09">https://zoom.us/j/96899364518?pwd=MzBsR2lYT0lYL2x2b1oyNU9LeWlWUT09</a><br>
Meeting ID: 968 9936 4518<br>
Пароль: 250319 </div>
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