Josephson Current and Multiple Andreev Reflections in Graphene SNS Junctions
arXiv:0710.4984 · doi:10.1103/PhysRevB.77.184507
Abstract
The Josephson Effect and Superconducting Proximity Effect were observed in Superconductor -Graphene-Superconductor (SGS) Josephson junctions with coherence lengths comparable to the distance between the superconducting leads. By comparing the measured temperature and doping dependence of the supercurrent and the proximity induced sub-gap features (multiple Andreev reflections) to theoretical predictions we find that, contrary to expectations, the ballistic transport model fails to describe the SGS junctions. In contrast, the diffusive junction model yields close quantitative agreement with the results. This conclusion is consistent with transport measurements in the normal state, which yield mean free paths in the graphene link that are much shorter than the junction length. We show that all devices fabricated on SiO2 substrates so far (our own as well as those reported by other groups) fall in the diffusive junction category.
20 pages, 3 figures
References in corpus (20)
- Electric Field Effect in Atomically Thin Carbon Films
- The electronic properties of graphene
- Two-Dimensional Gas of Massless Dirac Fermions in Graphene
- Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
- Observation of Electron-Hole Puddles in Graphene Using a Scanning Single Electron Transistor
- Carrier transport in 2D graphene layers
- Bipolar supercurrent in graphene
- Measurement of Scattering Rate and Minimum Conductivity in Graphene
- Specular Andreev reflection in graphene
- Phase Coherent Transport of Charges in Graphene Quantum Billiard
- Quantum transport of massless Dirac fermions in graphene
- Graphene: new bridge between condensed matter physics and quantum electrodynamics
- Electron scattering on microscopic corrugations in graphene
- Tunable Supercurrent Through Semiconductor Nanowires
- Josephson effect in ballistic graphene
- Charge Transport and Inhomogeneity near the Charge Neutrality Point in Graphene
- Observation of transition from escape dynamics to underdamped phase diffusion in a Josephson junction
- Proximity Effect and Multiple Andreev Reflections in Diffusive SNS Junctions
- Josephson effect in graphene SBS junctions
- Subharmonic gap structure in short ballistic graphene junctions
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