Micro-superconducting quantum interference devices based on V/Cu/V Josephson nanojunctions

Abstract

High-T C rf superconducting quantum interference device readout with a cryogenic preamplifier Rev. Sci. Instrum. 77, 066106 (2006); 10.1063/1.2216852 Microscopic analysis of low-frequency flux noise in Y Ba 2 Cu 3 O 7 direct current superconducting quantum interference devices

Low-temperature characterization of Nb-Cu-Nb weak links with Ar ion-cleaned interfaces

“…When it comes to superconductors with higher T c compared to Al, vanadium is one of the few that are easily suited for shadow evaporation. 18,19 On the other hand, in Ref. 20, the critical currents in shadow-evaporated Nb-CuNb SNS junctions, measured down to 300 mK, were found to be in excellent agreement with theoretical predictions.…”

Non-hysteretic superconducting quantum interference proximity transistor with enhanced responsivity

“…A further reduction of the weak link length to about 110 nm would already yield a minigap size of 0:97D 1 , 36 corresponding to an improvement of the sensitivity of less than 30%. On the other hand, replacing the superconductors with one with increased gap like vanadium 37 or niobium 8 would allow almost an order of magnitude enhancement of the response function.…”

Thermal rectification of electrons in hybrid normal metal-superconductor nanojunctions

“…[37][38][39] On the other side, InAs-based twodimensional electron gases combined with niobium (Nb) would enable the realization of Schottky barrier-free highly transmissive semiconductor-superconductor ballistic junctions. [40][41][42] These predictions for thermal rectifications could be tested experimentally in a prototype hybrid microstructure designed along the lines of that presented in Ref.…”