Tunable Supercurrent at the Charge Neutrality Point via Strained Graphene Junctions
arXiv:1106.3333 · doi:10.1103/PhysRevB.84.035407
Abstract
We theoretically calculate the charge-supercurrent through a ballistic graphene junction where superconductivity is induced via the proximity-effect. Both monolayer and bilayer graphene are considered, including the possibility of strain in the systems. We demonstrate that the supercurrent at the charge neutrality point can be tuned efficiently by means of mechanical strain. Remarkably, the supercurrent is enhanced or suppressed relative to the non-strained case depending on the direction of this strain. We also calculate the Fano factor in the normal-state of the system and show how its behavior varies depending on the direction of strain.
7 Pages and 4 Figures. To Appear in Physical Review B
References in corpus (42)
- 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
- Landau level degeneracy and quantum Hall effect in a graphite bilayer
- Biased bilayer graphene: semiconductor with a gap tunable by electric field effect
- Uniaxial Strain in Graphene by Raman Spectroscopy: G peak splitting, Gruneisen Parameters and Sample Orientation
- Gate-induced insulating state in bilayer graphene devices
- A tight-binding approach to uniaxial strain in graphene
- Andreev reflection and Klein tunneling in graphene
- Colloquium: The transport properties of graphene: An introduction
- Quantum-limited shot noise in graphene
- Specular Andreev reflection in graphene
- Tuning carbon nanotube bandgaps with strain
- Effects of Strain on Electronic Properties of Graphene
- Observation of an Electric-Field Induced Band Gap in Bilayer Graphene by Infrared Spectroscopy
- Zitterbewegung, chirality, and minimal conductivity in graphene
- New Generation of Massless Dirac Fermions in Graphene under External Periodic Potentials
- Unconventional superconductivity on a topological insulator
- Josephson effect in ballistic graphene
- Evidence of structural strain in epitaxial graphene layers on 6H-SiC(0001)
- Electron Beam Supercollimation in Graphene Superlattices
- Charge inhomogeneities due to smooth ripples in graphene sheets
- Strained graphene: tight-binding and density functional calculations
- Electron-electron interactions and the phase diagram of a graphene bilayer
- Controlling Energy Gap of Bilayer Graphene by Strain
- Ballistic transmission through a graphene bilayer
- Gate tunable charged-phonon effect in bilayer graphene
- Interplay between Superconductivity and Ferromagnetism on a Topological Insulator
- Evidence for Strain-Induced Local Conductance Modulations in Single-Layer Graphene on SiO2
- Self-consistent solution for proximity effect and Josephson current in ballistic graphene SNS Josephson junctions
- A supercurrent switch in graphene -junctions
- Excitation gap of a graphene channel with superconducting boundaries
- Graphene-based electronic spin lenses
- Josephson current in graphene: the role of unconventional pairing symmetries
- Finite difference method for transport properties of massless Dirac fermions
- Subharmonic gap structure in short ballistic graphene junctions
- Reentrance effect in a graphene n-p-n junction coupled to a superconductor
- Critical Josephson current in ballistic superconductor-graphene systems
- Dirac-Kronig-Penney model for strain-engineered graphene
- Andreev reflection in bilayer graphene
- Pseudo-diffusive conduction at the Dirac point of a normal-superconductor junction in graphene
Cited by in corpus (16)
- Transport properties of graphene across strain-induced nonuniform velocity profiles
- Proximity coupling in superconductor-graphene heterostructures
- Tunable Anomalous Andreev Reflection and Triplet Pairings in Spin Orbit Coupled Graphene
- Superconducting proximity effect in graphene under inhomogeneous strain
- Strain Controlled Spin and Charge Pumping in Graphene Devices via Spin-orbit Coupled Barriers
- Magnetic field oscillations of the critical current in long ballistic graphene Josephson junctions
- Tight-binding study of bilayer graphene Josephson junctions
- Spin Transport and Spin Pump in Graphene-like Materials: Effect of tilt in Dirac cones
- Andreev tunnelling and Josephson current in light irradiated graphene
- Disordered graphene Josephson junctions
- Supercurrent reversal in Josephson junctions based on bilayer graphene flakes
- Strain designed Josephson junction qubits with topological insulators
- Josephson coupling between superconducting islands on single and bilayer graphene
- Unified Formula for Stationary Josephson Current in Planar Graphene Junctions
- Josephson Current in Ballistic Graphene Corbino Disk
- Transport through Nodal Surface Semimetal-Superconductor junction in absence/presence of light irradiation