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DTSTAMP:20260424T233057Z
UID:68b57cbfb8124109998727@ist.ac.at
DTSTART:20250912T110000
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DESCRIPTION:Speaker: Denis Bandurin\nhosted by Hryhoriy Polshyn / Zhanybek 
 Alpichshev\nAbstract: Since the isolation of graphene\, devices based on n
 ovel low-dimensional materials and their heterostructures have unlocked va
 st opportunities for exploring new fundamental phenomena. Reduced dimensio
 nality\, unique band structures\, quantum geometry\, and strong quasiparti
 cle interactions collectively shape the response of these materials to ext
 ernal fields\, offering a powerful platform to probe novel light-matter in
 teractions and prototype future optoelectronic technologies.In the first p
 art of my presentation\, I will introduce terahertz-driven magnetotranspor
 t as a novel multi- messenger probe for investigating the properties of qu
 antum materials. We will explore how terahertz excitation in moiré superl
 attices can reveal deeper insights into their interaction-driven and topol
 ogical properties [1]. Next\, I will discuss the use of terahertz excitati
 on to initiate hydrodynamic electron transport\, demonstrating the emergen
 ce of viscous terahertz photoconductivity-a behavior distinct from all kno
 wn types of photoconductivity in conventional materials [2]. We will also 
 discuss potential applications of viscous terahertz bolometers. Finally\, 
 I will present the near-field excitation of ultra-slow Bernstein collectiv
 e modes in graphene\, whose diverging density of plasmonic states can lead
  to strong magnetoabsorption at terahertz frequencies [3]. We will discuss
  how these modes provide a tool for testing the tomographic Fermi liquid h
 ypothesis [4].References1. High-mobility compensated semimetals\, orbital 
 magnetization\, and umklapp scattering in bilayergraphene moir superlattic
 es\, A. L. Shilov\, M. A. Kashchenko\, P. A. Pantalen\, M. Kravtsov\, A.Ku
 driashov\, Z. Zhan\, T. Taniguchi\, K. Watanabe\, S. Slizovskiy\, K. S. No
 voselov\, V. I. Fal'ko\, F.Guinea\, D. A. Bandurin\; ACS Nano 18\, 18\, 11
 76911777 (2024).2. Viscous Terahertz Photoconductivity of Hydrodynamic Ele
 ctrons in Graphene\, M. Kravtsov\, A. L.Shilov\, Y. Yang\, T. Pryadilin\, 
 M. A. Kashchenko\, O. Popova\, M. Titova\, D. Voropaev\, Y. Wang\, K.Shein
 \, I. Gayduchenko\, G. N. Goltsman\, M. Lukianov\, A. Kudriashov\, T. Tani
 guchi\, K. Watanabe\, D.A. Svintsov\, K. S. Novoselov\, S. Adam\, A. Princ
 ipi\, D. A. Bandurin\; Nature Nanotechnology 20\, 5156 (2025).3. Cyclotron
  resonance overtones and near-field magnetoabsorption via terahertz Bernst
 ein modes ingraphene\; D. A. Bandurin\, E. Moench\, K. Kapralov\, I. Y. Ph
 inney\, K. Lindner\, S. Liu\, J. H. Edgar\, I. A.Dmitriev\, P. Jarillo-Her
 rero\, D. Svintsov\, S. D. Ganichev\, Nature Physics 18\, 462467 (2022).4.
  Testing the tomographic Fermi liquid hypothesis with high-order cyclotron
  resonance\; I. Moiseenko\,E. Mnch\, K. Kapralov\, D.A. Bandurin\, S. Gani
 chev\, D. Svintsov\, Phys. Rev. Lett. 134\, 226902(2025).
LOCATION:Office Bldg West / Ground floor / Heinzel Seminar Room (I21.EG.101
 )\, ISTA
ORGANIZER:swiddman@ist.ac.at
SUMMARY:Denis Bandurin: Teratronics in the quantum flatland
URL:https://talks-calendar.ista.ac.at/events/5987
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