Superconductor Insulator Transition in Long MoGe Nanowires
arXiv:1204.3333 · doi:10.1103/PhysRevLett.109.027002
Abstract
Properties of one-dimensional superconducting wires depend on physical processes with different characteristic lengths. To identify the process dominant in the critical regime we have studied trans- port properties of very narrow (9-20 nm) MoGe wires fabricated by advanced electron-beam lithography in wide range of lengths, 1-25 microns. We observed that the wires undergo a superconductor -insulator transition that is controlled by cross sectional area of a wire and possibly also by the thickness-to-width ratio. Mean-field critical temperature decreases exponentially with the inverse of the wire cross section. We observed that qualitatively similar superconductor{insulator transition can be induced by external magnetic field. Some of our long superconducting MoGe nanowires can be identified as localized superconductors, namely in these wires one-electron localization length is much shorter than the length of a wire.
References in corpus (21)
- 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'
- Size Dependent Breakdown of Superconductivity in Ultranarrow Nanowires
- Evidence for Macroscopic Quantum Tunneling of Phase Slips in Long One-Dimensional Superconducting Al Wires
- Superconducting properties of polycrystalline Nb nanowires templated by carbon nanotubes
- Suppression of superconductivity in nanowires by bulk superconductors
- Influence of high magnetic fields on superconducting transition of one-dimensional Nb and MoGe nanowires
- Magnetic field enhancement of superconductivity in ultra-narrow wires
- Effects of dissipation on a quantum critical point with disorder
- Universal conductance of nanowires near the superconductor-metal quantum transition
- Suppression of $\bbox{T_c}$ in superconducting amorphous wires
- Quantum fluctuations in thin superconducting wires of finite length
- Determination of the Superconductor-Insulator Phase Diagram for One-Dimensional Wires
- Sharp Superconductor-Insulator Transition in Short Wires
- The Effect of Quantum Phase Slip Interactions on the Transport of Thin Superconducting Wires
- Stabilizing Superconductivity in Nanowires by Coupling to Dissipative Environments
- Width and Magnetic Field Dependence of Transition Temperature in Ultranarrow Superconducting Wires
- Anti-proximity Effect in Aluminum Nanowires
- Quantum phase slips in a confined geometry
Cited by in corpus (8)
- Emergence of Quantum Phase-Slip Behaviour in Superconducting NbN Nanowires: DC Electrical Transport and Fabrication Technologies
- Superconductor-Insulator Transition in disordered Josephson junction chains
- Pair-breaking quantum phase transition in superconducting nanowires
- Negative Magnetoresistance in Amorphous Indium Oxide Wires
- Strong suppression of the resistivity near the transition to superconductivity in narrow micro-bridges in external magnetic fields
- Finite Size Effect in Amorphous Indium oxide
- Deficiency of the scaling collapse as an indicator of a superconductor-insulator quantum phase transition
- Growth Optimization of MoSi Thin Film and Measurement of Transport Critical Current Density of its Meander Structure