Optimization of electron pumping by harmonic mixing
arXiv:1012.4663 · doi:10.1103/PhysRevB.83.205310
Abstract
For a symmetric bridge coupled to infinite leads, in the presence of a dipole-coupled external ac-field with harmonic mixing, we solve the Schrödinger equation in the time-domain using open boundary conditions as well as in the energy-domain using Floquet scattering theory. As this potential breaks parity and generalized parity, we find a non-vanishing average current. We then optimize the relative amplitude ratio between the fundamental and the second harmonic leading to a maximum in the pump current.
13 pages, 6 figures, accepted at Phys. Rev. B, http://prb.aps.org/accepted/B/7b073O7dMc412f17647d3877ee3ac5c3e271dcb1c
References in corpus (11)
- Artificial Brownian motors: Controlling transport on the nanoscale
- Driven quantum transport on the nanoscale
- Dictionary between scattering matrix and Keldysh formalisms for quantum transport driven by time-periodic fields
- A time-dependent approach to electron pumping in open quantum systems
- Dynamical Coulomb Blockade and the Derivative Discontinuity of Time-Dependent Density Functional Theory
- Quantum ratchet effect for vortices
- Rectification of laser-induced electronic transport through molecules
- Photovoltaic and Rectification Currents in Quantum Dots
- Coherent quantum transport in narrow constrictions in the presence of a finite-range longitudinally polarized time-dependent field
- Wave packet approach to transport in mesoscopic systems
- Quantum pumping of electrons by a moving modulated potential