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Freely Flowing Currents and Electric Field Expulsion in Viscous Electronics
Michal Shavit1, Andrey Shytov2, Gregory Falkovich1,3,4
1Weizmann Institute of Science, Rehovot 76100 Israel.
Physical Review Letters
|August 7, 2019
Summary
Electronic fluids exhibit unique behavior where electric fields are expelled from flows due to particle collisions. This results in free currents and potential jumps at electrodes, revealing new hydrodynamic principles.
Area of Science:
- Hydrodynamics
- Electromagnetism
- Condensed Matter Physics
Background:
- Electronic fluids introduce equipotential flow sources within hydrodynamic systems.
- Understanding the relationship between current and electric fields in these fluids is crucial.
Purpose of the Study:
- To investigate the phenomenon of electric field expulsion in electronic fluid flows.
- To derive new boundary conditions for current-injecting electrodes in such systems.
- To analyze current distribution and the impact of electrode geometry on field expulsion.
Main Methods:
- Theoretical analysis of nonlocal current-electric field relations.
- Derivation of novel boundary conditions for electronic fluid flows.
- Examination of current distribution and field expulsion mechanisms.
Main Results:
- Demonstrated total or partial electric field expulsion from electronic fluid flows.
- Observed freely flowing currents in the bulk fluid.
- Identified a boundary jump in electric potential at current-injecting electrodes.
- Linked field expulsion to the breakdown of conformal invariance.
Conclusions:
- Momentum-conserving interparticle collisions are key to electric field expulsion in electronic fluids.
- New boundary conditions are established for analyzing these phenomena.
- Electrode geometry significantly influences the extent of field expulsion.
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