Single-parameter pumping in graphene

Abstract

We propose a quantum pump mechanism based on the particular properties of graphene, namely chirality and bipolarity. The underlying physics is the excitation of evanescent modes entering a potential barrier from one lead, while those from the other lead do not reach the driving region. This induces a large nonequilibrium current with electrons stemming from a broad range of energies, in contrast to the narrow resonances that govern the corresponding effect in semiconductor heterostructures. Moreover, the pump mechanism in graphene turns out to be robust, with a simple parameter dependence, which is beneficial for applications. Numerical results from a Floquet scattering formalism are complemented with analytical solutions for small to moderate driving.

7 pages, 5 figures. Published version

References in corpus (13)

• Chiral tunneling and the Klein paradox in graphene
• Artificial Brownian motors: Controlling transport on the nanoscale
• Quantum-limited shot noise in graphene
• Driven quantum transport on the nanoscale
• A time-dependent approach to electron pumping in open quantum systems
• A double-dot quantum ratchet driven by an independently biased quantum point contact
• Photon-assisted electron transport in graphene
• Robust single-parameter quantized charge pumping
• Nonadiabatic Electron Pumping: Maximal Current with Minimal Noise
• Single-parameter quantized charge pumping in high magnetic fields
• Nanoampere pumping of Cooper pairs
• Enhancing single-parameter quantum charge pumping in carbon-based devices
• AC transport in carbon-based devices: challenges and perspectives

Cited by in corpus (25)

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• Floquet scattering of quadratic band-touching semimetals through a time-periodic potential well
• Floquet transmission in Weyl/multi-Weyl and nodal-line semimetals through a time-periodic potential well
• Adiabatic quantum pumping in graphene with magnetic barriers
• Fano Resonance in the Nonadiabatically Pumped Shot Noise of a Time-Dependent Quantum Well in 2DEG and Graphene
• Ballistic transport through irradiated graphene
• Non-adiabatic topological spin pumping
• Magnetopumping current in graphene Corbino pump
• Resonant high harmonic generation in a ballistic graphene transistor with an AC driven gate
• Floquet spectrum and electronic transitions of tilted anisotropic Dirac materials under electromagnetic radiation: monodromy matrix approach
• Charge pumping in strongly-coupled molecular quantum dots
• Nonlinear response of a ballistic graphene transistor with an ac-driven gate: high harmonic generation and THz detection
• Nonadiabatic pure spin pumping in zigzag graphene nanoribbons with proximity induced ferromagnetism
• Fano resonance in the nonadiabatic pumped shot noise of a time-dependent potential well
• Shot noise in a harmonically driven ballistic graphene transistor
• Nonadiabatic pumping in classical and quantum chaotic scatterers
• Fano resonance via bonding and antibonding states in nonadiabatically-pumped double-quantum-well systems
• Fluctuation-induced currents in suspended graphene nanoribbons: Adiabatic quantum pumping approach
• Eigenfrequencies of the randomly pinned drum and conductivity of graphene
• Transport properties of the pseudospin-3/2 Dirac-Weyl fermions in the double-barrier-modulated two-dimensional system
• Pumping current of a Luttinger liquid with finite length