Magnetic-field asymmetry of electron wave packet transmission in bent channels capacitively coupled to a metal gate

TL;DR

This paper investigates how a bent electron waveguide's transmission probability varies asymmetrically with magnetic field direction when capacitively coupled to a metal gate, due to non-linear potential effects.

Contribution

It reveals magnetic-field asymmetry in electron transmission caused by capacitive coupling and non-linear potential effects in bent channels.

Findings

Transmission probability is asymmetric with magnetic field direction.

Capacitive coupling induces non-linear potential effects.

Asymmetry depends on the bent channel geometry.

Abstract

We study the electron wave packet moving through a bent channel. We demonstrate that the packet transmission probability becomes an uneven function of the magnetic field when the electron packet is capacitively coupled to a metal plate. The coupling occurs through a non-linear potential which translates a different kinetics of the transport for opposite magnetic field orientations into a different potential felt by the scattered electron.