Viscous effects in electronic systems typically arise from vorticity at the boundaries of the 2D system. This limits the contribution of the viscous dissipation to the total dissipation of the system, making the viscous effect challenging to measure.
In our work, we use a periodic array of micromagnets to create vorticity – and thus viscous dissipation – across the entire 2D region, resulting in a viscous contribution of 30% to the total dissipation of the system of, 3x higher than in conventional boundary-induced electron hydrodynamics.
About the presenter
Yonatan Ashlea Alava is a Diversity in FLEET Research Fellow at UNSW with CI Alex Hamilton. His research specialises in fabrication of artificial graphene in GAAs 2D quantum systems, working within FLEET’s Research Theme 1, Topological Materials.