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CATEGORIES:Theory of Condensed Matter
SUMMARY:Altering electrical transport in 2D materials thro
 ugh sub-wavelength cavities - Marco Polini\, Unive
 rsity of Pisa
DTSTART;TZID=Europe/London:20251106T140000
DTEND;TZID=Europe/London:20251106T153000
UID:TALK236080AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/236080
DESCRIPTION:The question of whether sub-wavelength cavities ca
 n alter the transport properties of quantum materi
 als is currently attracting a great deal of attent
 ion. In this talk I will first present a theoretic
 al framework [1] that allows to quantify the impac
 t of dark sub-wavelength cavities on the propertie
 s of quantum materials. I will then show that a pa
 radigmatic magneto-transport phenomenon in two-dim
 ensional (2D) metals\, i.e. Shubnikov-de Haas osci
 llations\, is modified by the modes of a sub-wavel
 ength cavity [2]. This effect is intrinsic\, total
 ly unrelated to disorder\, and stems from the fact
  that the polariton modes of the cavity alter the 
 Landau parameters of the underlying normal Fermi l
 iquid. As an illustrative example\, I will discuss
  explicit calculations of the Fermi liquid paramet
 ers of graphene in a planar van der Waals cavity c
 omprising natural hyperbolic crystals and metal ga
 tes. Finally\, if time allows\, I will show that s
 ub-wavelength cavities can boost the critical temp
 erature of non-phonon superconductors [3].\n\n\n[1
 ] G. M. Andolina et al.\, Phys. Rev. B 109\, 10451
 3 (2024).\n\n[2] R. Riolo et al.\, Proc. Natl. Aca
 d. Sci. (USA) 122\, e2407995122 (2025).\n\n[3] R. 
 Riolo et al.\, to appear on arXiv.
LOCATION:Seminar Room 3\, RDC
CONTACT:Gaurav
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