258 research outputs found
Freely flowing currents and electric field expulsion in viscous electronics
Electronic fluids bring into hydrodynamics a new setting: equipotential flow
sources embedded inside the fluid. Here we show that nonlocal relation between
current and electric field due to momentum-conserving inter-particle collisions
leads to a total or partial field expulsion from such flows. That results in
freely flowing currents in the bulk and boundary jump in electric potential at
current-injecting electrodes. We derive the appropriate boundary conditions,
analyze current distribution in free flows, discuss how the field expulsion
depends upon geometry of the electrode, and link the phenomenon to breakdown of
conformal invariance.Comment: 5 pages, 2 figure
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