Magnetoresistance Induced by Rare Strong Scatterers in a High Mobility 2DEG
Mesoscale and Nanoscale Physics
2014-11-05 v3
Abstract
We observe a strong negative magnetoresistance at non-quantizing magnetic fields in a high-mobility two-dimensional electron gas (2DEG). This strong negative magnetoresistance consists of a narrow peak around zero magnetic field and a huge magnetoresistance at larger fields. The peak shows parabolic magnetic field dependence and is attributed to the interplay of smooth disorder and rare strong scatterers. We identify the rare strong scatterers as macroscopic defects in the material and determine their density from the peak curvature.
Keywords
Cite
@article{arxiv.1401.7940,
title = {Magnetoresistance Induced by Rare Strong Scatterers in a High Mobility 2DEG},
author = {L. Bockhorn and I. V. Gornyi and D. Schuh and C. Reichl and W. Wegscheider and R. J. Haug},
journal= {arXiv preprint arXiv:1401.7940},
year = {2014}
}
Comments
5 pages, 4 figures