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SUMMARY:IMX Seminar Series - Novel thermal probes of the many-body states 
 in magic angle twisted bilayer graphene
DTSTART:20240325T131500
DTEND:20240325T141500
DTSTAMP:20260916T044050Z
UID:fa175428770212e7ace8fed846869c3b77b1b3d446fc78d827e5e3ce
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Dmitri Efetov\, Ludwig-Maximilians-University\, München
  Germany\nTwist-angle engineering of 2D materials has led to the recent di
 scoveries of novel many-body ground states in moiré systems such as corre
 lated insulators\, unconventional superconductivity\, strange metals\, orb
 ital magnetism and topologically nontrivial phases. These systems are clea
 n and tuneable\, where all phases can coexist in a single device\, which o
 pens up enormous possibilities to address key questions about the nature o
 f correlation induced superconductivity and topology\, and allows to creat
 e entirely novel quantum phases with enhanced interactions. In this talk w
 e will introduce some of the main concepts underlying these systems\, conc
 entrating on magic angle twisted bilayer graphene (MATBG) and show how sym
 metry-broken states emerge at all integer electron fillings [1]. We furthe
 r will discuss recent experiments including screened interactions [2]\, Ch
 ern insulators [3]\, magnetic Josephson junctions [4]\, quantum criticalit
 y [5]\, re-entrant correlated insulators at high magnetic fields [6]\, Dir
 ac spectroscopy of correlated states in magic angle trilayers and discuss 
 some of the avenues for novel quantum sensing applications [8].\n[1] Natur
 e\, 574\, 653 (2019).\n[2] Nature\, 583\, 375–378 (2020).\n[3] Nature Ph
 ysics\, 17\, 710 (2021).\n[4] arXiv:2110.01067 (2021).\n[5] Nature Physics
 \, 18\, 633 (2022).\n[6] PRL 128\, 217701 (2022).\n[7] Nature Materials\, 
 in press (2022).\n[8] Nano Letters\, 22\, 6465(2022).\n\nBio: Prof. Dr. Dm
 itri K. Efetov (M) received a Diploma (M.Sc.) in Physics from ETH Zurich (
 CH) in 2007. Subsequently Dmitri earned a M.A.\, M. Ph. and Ph.D. in Physi
 cs from Columbia University (USA) in 2014\, under the supervision of one o
 f the pioneers of graphene Prof. Dr. Philip Kim\, with a thesis titled “
 Towards inducing superconductivity into graphene”. Dmitri then worked as
  a Postdoctoral Researcher at the Massachusetts Institute of Technology (M
 IT\, USA) in the group of Prof. Dr. Dirk Englund\, developing ultra-fast m
 icrowave thermometry and single photon detectors based on graphene. Since 
 2017 Dmitri was an Assistant Professor and Group Leader at ICFO (SP)\, and
  since 2021 is a Full Professor (W3) and Chair of Solid State Physics at L
 MU Munich (GER)\, with a research program that concentrates on the investi
 gation of novel “moiré materials” at the intersection of condensed ma
 tter physics\, optics and quantum science. Prof. Efetov received the Charl
 es H. Towns Award for his outstanding research achievements during his PhD
 \, the Obra Social ”laCaixa” Junior Leader Fellowship\, an ERC Startin
 g Grant\, was a finalist of the LaVanguardia Science Prize\, received the 
 2022 IUPAP Early Career Scientist Prize in Semiconductor Physics\, and won
  the DFG Leibniz prize 2024 for his improvement of the device quality and 
 the ground-breaking fundamental investigations of novel insulating\, super
 conducting and topological phases in magic angle twisted bilayer graphene.
  He was the leader of the 2D-SIPC project in the EUs Quantum Technology Fl
 agship\, as well as a member of its Science and Engineering board. He is n
 ow a core-member of the Munich Center of Quantum Science and Technology (M
 CQST) and is member of the advisory board of the Center of Nano Science (C
 eNS).
LOCATION:MXF 1 https://plan.epfl.ch/?room==MXF%201
STATUS:CONFIRMED
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