Quantized conductance doubling and hard gap in a two-dimensional semiconductor–superconductor heterostructure

M Kjærgaard, F Nichele, HJ Suominen… - Nature …, 2016 - nature.com
Coupling a two-dimensional (2D) semiconductor heterostructure to a superconductor opens
new research and technology opportunities, including fundamental problems in mesoscopic …

[图书][B] Superconductor/semiconductor junctions

T Schäpers - 2001 - books.google.com
The present book covers the transport properties of superconductor/two dimensional
electron gas Josephson junctions. Starting with the basic el ement, a superconductor/two …

Two-dimensional electron gas formation in undoped quantum wells

F Capotondi, G Biasiol, I Vobornik, L Sorba… - Journal of Vacuum …, 2004 - pubs.aip.org
We report on the achievement of a two-dimensional electron gas in completely undoped In
0.75 Al 0.25 As/In 0.75 Ga 0.25 As metamorphic quantum wells. Using these structures we …

Magnetotransport in high--factor low-density two-dimensional electron systems confined in quantum wells

W Desrat, F Giazotto, V Pellegrini, F Beltram… - Physical Review B …, 2004 - APS
We report magnetotransport measurements on high-mobility two-dimensional electron
systems (2DESs) confined in In 0.75 Ga 0.25 As∕ In 0.75 Al 0.25 As single quantum wells …

Shot-noise and conductance measurements of transparent superconductor/two-dimensional electron gas junctions

BR Choi, AE Hansen, T Kontos, C Hoffmann… - Physical Review B …, 2005 - APS
We have measured the conductance and shot noise of superconductor-normal metal (SN)
junctions between a niobium (Nb) film and a two-dimensional electron gas (2DEG), formed …

A spin injector

Z Chen, B Wang, DY Xing, J Wang - Applied physics letters, 2004 - pubs.aip.org
We theoretically put forward a spin injector, which consists of a three-terminal ferromagnetic-
metal (FM) nonmagnetic-semiconductor (NS)-superconductor (SC) mesoscopic hybrid …

Semiclassical gaps in the density of states of chaotic Andreev billiards

J Kuipers, D Waltner, C Petitjean, G Berkolaiko… - Physical review …, 2010 - APS
The connection of a superconductor to a chaotic ballistic quantum dot leads to interesting
phenomena, most notably the appearance of a hard gap in its excitation spectrum. Here we …

Density of states of chaotic Andreev billiards

J Kuipers, T Engl, G Berkolaiko, C Petitjean… - Physical Review B …, 2011 - APS
Quantum cavities or dots have markedly different properties depending on whether their
classical counterparts are chaotic or not. Connecting a superconductor to such a cavity …

Growth-temperature optimization for low-carrier-density In0. 75Ga0. 25As-based high electron mobility transistors on InP

PJ Simmonds, HE Beere, DA Ritchie… - Journal of Applied …, 2007 - pubs.aip.org
Two-dimensional electron gases (2DEGs) were formed in undoped In 0.75 Al 0.25 As∕ In
0.75 Ga 0.25 As∕ In 0.75 Al 0.25 As quantum wells. The optimal growth temperature for this …

Prospects for detection of spin accumulation using submicron planar Andreev array spectroscopy

F Magnus, KA Yates, B Morris, Y Miyoshi… - Applied physics …, 2006 - pubs.aip.org
Andreev spectroscopy can be employed to measure transport spin polarization. Planar
Andreev devices have an advantage over point-contact Andreev spectroscopy as they offer …