An electron jet pump: The Venturi effect of a Fermi liquid

TL;DR

This paper introduces an electronic Venturi effect in a three-terminal 2D electron system, demonstrating a jet pump mechanism where excited electrons transfer energy and momentum, revealing novel non-equilibrium transport phenomena.

Contribution

It presents the first experimental realization of an electron jet pump based on a Venturi-like effect in a Fermi liquid, expanding understanding of non-equilibrium electron dynamics.

Findings

Observation of electron jet pumping behavior

Energy and momentum transfer between electrons

Phenomenological similarity to water jet pumps

Abstract

A three-terminal device based on a two-dimensional electron system is investigated in the regime of non-equilibrium transport. Excited electrons scatter with the cold Fermi sea and transfer energy and momentum to other electrons. A geometry analogous to a water jet pump is used to create a jet pump for electrons. Because of its phenomenological similarity we name the observed behavior "electronic Venturi effect".