Magneto-exciton limit of quantum Hall breakdown in graphene
Mesoscale and Nanoscale Physics
2023-10-26 v2
Abstract
One of the intrinsic drift velocity limit of the quantum Hall effect is the collective magneto-exciton (ME) instability. It has been demonstrated in bilayer graphene (BLG) using noise measurements. We reproduce this experiment in monolayer graphene (MLG), and show that the same mechanism carries a direct relativistic signature on the breakdown velocity. Based on theoretical calculations of MLG- and BLG-ME spectra, we show that Doppler-induced instabilities manifest for a ME phase velocity determined by a universal value of the ME conductivity, set by the Hall conductance.
Cite
@article{arxiv.2302.14791,
title = {Magneto-exciton limit of quantum Hall breakdown in graphene},
author = {A. Schmitt and M. Rosticher and T. Taniguchi and K. Watanabe and G. Fève and J-M. Berroir and G. Ménard and C. Voisin and M. O. Goerbig and B. Plaçais and E. Baudin},
journal= {arXiv preprint arXiv:2302.14791},
year = {2023}
}
Comments
27 pages, 11 figures including supplementary information (14 pages and 3 figures for the main text alone)