In compensated two-component systems in confined, two-dimensional geometries, nonlocal response may appear due to external magnetic field. Within a phenomenological two-fluid framework, we demonstrate the evolution of charge flow profiles and the emergence of a giant nonlocal pattern dominating charge transport in magnetic field. Applying our approach to the specific case of intrinsic graphene, we suggest a simple physical explanation for the experimental observation of giant nonlocality. Our results provide an intuitive way to predict the outcome of future experiments exploring the rich physics of many-body electron systems in confined geometries as well as to design possible applications.
@article{arxiv.1912.12341,
title = {Giant nonlocality in nearly compensated 2D semimetals},
author = {S. Danz and M. Titov and B. N. Narozhny},
journal= {arXiv preprint arXiv:1912.12341},
year = {2020}
}