Alladi Ramakrishnan Hall

Hydrodynamic and Ballistic Transport of Electrons in 2d Materials

Deshdeep Sahdev

Quazar Technologies

Electron transport in 2-dimensional systems with weak electron-lattice
interactions can transition from an ohmic to a ballistic or a
hydrodynamic
regime. We show the occurrence of these transitions by viewing electrons
at the kinetic level in experimentally realizable systems. We solve our
kinetic model using "bolt", a computer package we have developed for
solving the Boltzmann equation, keeping intact its full time-dependence
and
non-linearity. We trace the choreography of vortices produced by AC
drives
in each of the non-ohmic regimes and define clear experimental
signatures
of ballistic and hydrodynamic behavior.

A popular account of the work to be reported on may be found at
phys.org/news/2019-04-method-hydrodynamic-behavior-electrons-graphene.html