Superconducting MoSi nanowires

Abstract

We have fabricated disordered superconducting nanowires of molybdenium silicide. A molybdenium nanowire is first deposited on top of silicon, and the alloy is formed by rapid thermal annealing. The method allows tuning of the crystal growth to optimise, e.g., the resistivity of the alloy for potential applications in quantum phase slip devices and superconducting nanowire single-photon detectors. The wires have effective diameters from 42 to 79 nm, enabling the observation of crossover from conventional superconductivity to regimes affected by thermal and quantum fluctuations. In the smallest diameter wire and at temperatures well below the superconducting critical temperature, we observe residual resistance and negative magnetoresistance, which can be considered as fingerprints of quantum phase slips.

References in corpus (29)

• Silicon Quantum Electronics
• Quantum suppression of superconductivity in ultrathin nanowires
• Quantum Phase Slips in Superconducting Nanowires
• Superconductivity in one dimension
• Reply to the Comment on 'Quantum Phase Slips and Transport in Ultra-Thin Superconducting Wires'
• Coherent quantum phase slip
• Dissipation effects on the superconductor-insulator transition in 2-D superconductors
• Quantum Tunneling of the Order Parameter in Superconducting Nanowires
• Size Dependent Breakdown of Superconductivity in Ultranarrow Nanowires
• Evidence for Macroscopic Quantum Tunneling of Phase Slips in Long One-Dimensional Superconducting Al Wires
• Quantum fluctuations in ultranarrow superconducting nanowires
• Quantum phase slip interference device based on superconducting nanowire
• Evidence of quantum phase slip effect in titanium nanowires
• Coherent Flux Tunneling Through NbN Nanowires
• Coulomb blockade and Bloch oscillations in superconducting Ti nanowires
• Coulomb Blockade due to Quantum Phase-Slips Illustrated with Devices
• Quantum phase slips in superconducting wires with weak inhomogeneities
• Negative magnetoresistance and phase slip process in superconducting nanowires
• High Quality Factor Platinum Silicide Microwave Kinetic Inductance Detectors
• Phase-slip oscillator: few-photon non-linearities
• Quantum phase slips in superconducting Nb nanowire networks deposited on self-assembled Si templates
• Dissipative phases across the superconductor-to-insulator transition
• Suppression of superconductivity due to non-perturbative saddle points in the nonlinear $\sigma$-model
• Ultraviolet, Optical, and Near-IR Microwave Kinetic Inductance Detector Materials Developments
• The quantum phase slip phenomenon in superconducting nanowires with high-impedance environment
• Negative Magnetoresistance in Amorphous Indium Oxide Wires
• Junctionless Cooper pair transistor
• Single Flux Transistor: the controllable interplay of Coherent Quantum Phase Slip and Flux quantization
• Enhancement of the retrapping current of superconducting microbridges of finite length

Cited by in corpus (5)

• Emergence of Quantum Phase-Slip Behaviour in Superconducting NbN Nanowires: DC Electrical Transport and Fabrication Technologies
• Magnetic field-tuned superconductor/insulator transition in TiN nanostrips
• Phase transformation-induced superconducting aluminium-silicon alloy rings
• Vortex Dynamics in Amorphous MoSi Superconducting Thin Films
• Thin amorphous molybdenum silicide superconducting shells around individual nanowires deposited via magnetron co-sputtering