SPICE Workshop on Quantum Matter for Quantum Technologies, May 21st - May 23rd 2024
Marco Polini
Dipartimento di Fisica dell'Università di Pisa, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy
The question of whether sub-wavelength cavities can alter the magneto-transport properties of quantum materials is currently attracting a great deal of attention. In this talk I will show that a paradigmatic magneto-transport phenomenon in two-dimensional metals, i.e. the Shubnikov-de Haas oscillations in a weak perpendicular magnetic field, is modified by the modes of a sub-wavelength cavity. This effect is intrinsic, totally unrelated to disorder, and stems from the fact that the polariton modes of the cavity alter the Landau parameters of the underlying normal Fermi liquid. As an illustrative example, I will discuss explicit calculations of the Fermi liquid parameters of graphene in a planar van der Waals cavity comprising natural hyperbolic crystals and metal gates.