Quenched and Negative Hall Effect in Periodic Media: Application to Antidot Superlattices

Preprint

7 December 1993

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9312030

Abstract

We find the counterintuitive result that electrons move in OPPOSITE direction to the free electron E x B - drift when subject to a two-dimensional periodic potential. We show that this phenomenon arises from chaotic channeling trajectories and by a subtle mechanism leads to a NEGATIVE value of the Hall resistivity for small magnetic fields. The effect is present also in experimentally recorded Hall curves in antidot arrays on semiconductor heterojunctions but so far has remained unexplained.

Keywords

ANTIDOT SUPERLATTICES
COUNTERINTUITIVE
HETEROJUNCTIONS
PERIODIC MEDIA
NEGATIVE HALL
SUPERLATTICES
HALL EFFECT
DRIFT

All Related Versions

Version 1, 1993-12-07, ArXiv
Published version: Europhysics Letters, 25 (3), 219.

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