High Critical-Current Superconductor-InAs Nanowire-Superconductor Junctions

• We report on the fabrication of InAs nanowires coupled to superconducting leads with high critical current and widely tunable conductance. We implemented a double lift off nanofabrication Method to get very short nanowire devices with Ohmic contacts. We observe very high critical. currents of up to 800 nA in a wire with a diameter of 80 nm. The current- voltage characteristics of longer and suspended nanowires display,either. Coulomb blockade or supercurrent depending on a local gate voltage, combining different regimes of transport in a single device.

Ämnesord

NATURVETENSKAP  -- Kemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Nanoteknik -- Nanoteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Nano-technology -- Nano-technology (hsv//eng)

Nyckelord

devices

supercurrent

Coulomb blockade

supercurrent

Andreep reflection

josephson-junctions

InAs nanowires

InAs nanowires

supercurrent

Andreep reflection

Coulomb blockade

Publikations- och innehållstyp

art (ämneskategori)

ref (ämneskategori)