Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
1999-01-16
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
7 pages, 10 embedded figures, higher quality figures available in tif-format (or as a hard copy) from antti@mic.dtu.dk
Scientific paper
10.1103/PhysRevB.60.8191
We present detailed simulations addressing recent electronic interference experiments, where a metallic gate is used to locally modify the Fermi wave-length of the charge carriers. Our numerical calculations are based on a solution of the one-particle Schroedinger equation for a realistic model of the actual sample geometry, including a Poisson equation based determination of the potential due to the gate. The conductance is determined with the multiprobe Landauer-Buettiker formula, and in general we find conductance vs. gate voltage characteristics which closely resemble the experimental traces. A detailed examination based on quantum mechanical streamlines suggests that the simple one-dimensional semiclassical model often used to describe the experiments has only a limited range of validity, and that certain 'unexpected' periodicities should not be assigned any particular significance, they arise due to the complicated multiple scattering processes occurring in certain sample geometries.
Jauho Antti-Pekka
Pichugin Konstantin N.
Sadreev Almas. F.
No associations
LandOfFree
Simulations of interference effects in gated two-dimensional ballistic electron systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Simulations of interference effects in gated two-dimensional ballistic electron systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Simulations of interference effects in gated two-dimensional ballistic electron systems will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-15357