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Hydrodynamic effects in interacting Fermi electron jets.

Authors
  • Govorov, Alexander O
  • Heremans, Jean J
Type
Published Article
Journal
Physical review letters
Publication Date
Jan 16, 2004
Volume
92
Issue
2
Pages
26803–26803
Identifiers
PMID: 14753953
Source
Medline
License
Unknown

Abstract

We theoretically study hydrodynamic phenomena originating from electron-electron collisions in a two-dimensional Fermi system. We demonstrate that an electron beam sweeping past an aperture creates a pumping effect, attracting carriers from this aperture. This pumping effect originates from the specific electric potential distribution induced by the injected electrons. In the regions near the main stream of injected electrons, a positive potential is induced by the injected electrons. Thus, the normally repulsive Coulomb interaction leads to an attractive force in the Fermi system. This quantum pumping mechanism in a Fermi system differs qualitatively from the Bernoulli pumping effect in classical liquids. We also discuss possible experimental realizations.

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