In0.53Ga0.47As/InP quantum wires: Fabrication and magnetotransport studies
- 1 November 1990
- journal article
- Published by American Vacuum Society in Journal of Vacuum Science & Technology B
- Vol. 8 (6) , 1353-1356
- https://doi.org/10.1116/1.585076
Abstract
We have fabricated In0.53 Ga0.47 As/InP quantum wires with geometrical widths down to 80 nm by high resolution electron beam lithography and dry etching. The magnetotransport measurements display four distinct features: (1) The Shubnikov–de Haas oscillations show for narrow wires (<200 nm) a strong deviation from the 1/B periodicity. (2) Over the complete magnetic field range there are nonperiodic universal conductance fluctuations superimposed on the resistance curve. (3) At very low magnetic fields we observe a large negative magetoresistance, which decreases with increasing wire width. (4) In narrow wires we observe a distinct magnetoresistance peak at magnetic fields of about 1 T.This publication has 0 references indexed in Scilit: