Experimental investigation of the ratchet effect in a two-dimensional electron system with broken spatial inversion symmetry
Mesoscale and Nanoscale Physics
2009-11-13 v1
Abstract
We report on experimental evidence of directed electron transport, induced by external linear-polarized microwave irradiation, in a two-dimensional spatially-periodic asymmetrical system called ratchet. The broken spatial symmetry was introduced in a high mobility two-dimensional electron gas based on AlGaAs/GaAs heterojunction, by patterning an array of artificial semi-discs-shaped antidots. We show that the direction of the transport is efficiently changed by microwave polarization. The dependence of the effect on magnetic field and temperature is investigated. This represents a significant step towards the realization of new microwave detectors and current generators.
Keywords
Cite
@article{arxiv.0802.4250,
title = {Experimental investigation of the ratchet effect in a two-dimensional electron system with broken spatial inversion symmetry},
author = {S. Sassine and Yu. Krupko and J. -C. Portal and Z. D. Kvon and R. Murali and K. P. Martin and G. Hill and A. D. Wieck},
journal= {arXiv preprint arXiv:0802.4250},
year = {2009}
}