School of Physical Sciences
Jawaharlal Nehru University, New Delhi
Title : A ROBUST SIGNATURE OF ELECTRON HYDRODYNAMICS IN 2D MATERIALS
Speaker: Deshdeep Sahdev
(Quazar Tech, New Delhi)
Date: 08– August -2018
Time: 4 p.m,Wednesday
Venue: Seminar Room, SPS
Abstract : Electron transport can transition from ohmic to hydrodynamic when electron-electron scattering dominates, as shown in several recent experiments in systems such as Graphene. We show that microwave-frequency AC sources can excite hydrodynamic behavior involving vigorous vortex generation and reconnection, far more easily than the DC sources used so far. We identify the change of sign in a nonlocal current-voltage phase as a robust probe of the transition to the electronic hydrodynamic regime. We have discovered and investigated this signature using several innovative scientific and computational tools, which we have ourselves invented and authored. Some of these tools will be briefly described.