Équipe de Recherche en Physique de l'Information Quantique


Abstract = {The purpose of this work is to fabricate ribbon-like InGaAs and InAsP wires embedded in InP ridge structures and investigate their transport properties. The InP ridge structures that contain the wires are selectively grown by chemical beam epitaxy (CBE) on pre-patterned InP substrates. To optimize the growth and micro-fabrication processes for electronic transport, we explore the Ohmic contact resistance, the electron density, and the mobility as a function of the wire width using standard transport and Shubnikovde Haas measurements. At low temperatures the ridge structures reveal reproducible mesoscopic conductance fluctuations. We also fabricate ridge structures with submicron gate electrodes that exhibit non-leaky gating and good pinch-off characteristics acceptable for device operation. Using such wrap gate electrodes, we demonstrate that the wires can be split to form quantum dots evidenced by Coulomb blockade oscillations in transport measurements. {\copyright} 2009 Elsevier B.V. All rights reserved.},
Author = {Granger, G. and Kam, A. and Studenikin, S.A. and Sachrajda, A.S. and Aers, G.C. and Williams, R.L. and Poole, P.J.},
Document_Type = {Conference Paper},
Journal = {Physica E: Low-Dimensional Systems and Nanostructures},
Number = {10},
Pages = {2622-2627},
Source = {Scopus},
Title = {Electron transport in gated InGaAs and InAsP quantum well wires in selectively grown InP ridge structures},
Url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-77957990662&partnerID=40&md5=63871693c3f2e9e05c463b0c62ddedea},
Volume = {42},
Year = {2010},
Bdsk-Url-1 = {http://www.scopus.com/inward/record.url?eid=2-s2.0-77957990662&partnerID=40&md5=63871693c3f2e9e05c463b0c62ddedea}}