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

F. Rahman, Trevor Thornton

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)767-774
Number of pages8
JournalSuperlattices and Microstructures
Volume25
Issue number5
DOIs
StatePublished - May 1999

Fingerprint

Superconductivity
superconductivity
Niobium
Semiconductor materials
Geometry
Electrons
geometry
Hybrid systems
Transparency
Semiconductor quantum wells
Superconducting materials
electrons
hybrid structures
low resistance
Scattering
niobium
proximity
retarding
quantum wells
gratings

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Coupling of superconductivity with low-dimensional electron systems in mesoscopic geometries. / Rahman, F.; Thornton, Trevor.

In: Superlattices and Microstructures, Vol. 25, No. 5, 05.1999, p. 767-774.

Research output: Contribution to journalArticle

@article{9f5aa7ab5d3c43c09e4d13523112c6b4,
title = "Coupling of superconductivity with low-dimensional electron systems in mesoscopic geometries",
abstract = "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.",
author = "F. Rahman and Trevor Thornton",
year = "1999",
month = "5",
doi = "10.1006/spmi.1999.0737",
language = "English (US)",
volume = "25",
pages = "767--774",
journal = "Superlattices and Microstructures",
issn = "0749-6036",
publisher = "Academic Press Inc.",
number = "5",

}

TY - JOUR

T1 - Coupling of superconductivity with low-dimensional electron systems in mesoscopic geometries

AU - Rahman, F.

AU - Thornton, Trevor

PY - 1999/5

Y1 - 1999/5

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0032689762&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032689762&partnerID=8YFLogxK

U2 - 10.1006/spmi.1999.0737

DO - 10.1006/spmi.1999.0737

M3 - Article

AN - SCOPUS:0032689762

VL - 25

SP - 767

EP - 774

JO - Superlattices and Microstructures

JF - Superlattices and Microstructures

SN - 0749-6036

IS - 5

ER -