𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Coupling of superconductivity with low-dimensional electron systems in mesoscopic geometries

✍ Scribed by F Rahman; T.J Thornton

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
168 KB
Volume
25
Category
Article
ISSN
0749-6036

No coin nor oath required. For personal study only.

✦ Synopsis

We describe effects seen in coupled superconductor-semiconductor hybrid systems in various mesoscopic geometries. The hybrid structures consist of niobium films on high mobility InAs:GaSb quantum wells which form high transparency, low-resistance interfaces exhibiting a variety of effects in their resistive transitions and differential resistance scans. Grating structures show effects arising out of the confinement of quasiparticles while dot arrays show evidence of proximity induced superconductivity scaling as the density of dots. Superconducting dots deposited on narrow semiconductor channels show suppression of Andreev reflection which we attribute to interdot diffuse scattering from the walls of the channel.

πŸ“œ SIMILAR VOLUMES

Combined exciton–electron excitation in
Combined exciton–electron excitation in quantum wells with a two-dimensional electron gas of low density
✍ V.P. Kochereshko; D.R. Yakovlev; R.A. Suris; W. Ossau; A. Waag; G. Landwehr; P.C πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 English βš– 109 KB

A combined exciton-cyclotron resonance is found in the photoluminescence excitation and reflectivity spectra of semiconductor quantum wells with an electron gas of low density. In external magnetic fields an incident photon creates an exciton in the ground state and simultaneously excites an electro

Breakdown of the one-electron picture in
Breakdown of the one-electron picture in optical spectroscopy of low-dimensional electron systems: three anomalies around the Fermi level
✍ T. MΓ©lin; F. Laruelle πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 English βš– 71 KB

We report three distinct anomalies in emission, absorption and linear emission polarization of two-dimensional degenerate electron systems with tunable lateral potential modulation. We show that they occur for convergent as well as singular Fermi edges with a unique threshold energy below the Fermi