Hidden quantum pump effects in quantum coherent rings
arXiv:cond-mat/0302586 · doi:10.1103/PhysRevB.68.075303
Abstract
Time periodic perturbations of an electron system on a ring are examined. For small frequencies periodic small amplitude perturbations give rise to side band currents which in leading order are inversely proportional to the frequency. These side band currents compensate the current of the central band such that to leading order no net pumped current is generated. In the non-adiabatic limit, larger pump frequencies can lead to resonant excitations: as a consequence a net pumped current arises. We illustrate our results for a one channel ring with a quantum dot whose barriers are modulated parametrically.
8 pages, 5 figures
References in corpus (20)
- Scattering approach to parametric pumping
- An Adiabatic Quantum Electron Pump
- Floquet scattering theory of quantum pumps
- An Adiabatic Quantum Pump of Spin Polarized Current
- Dissipation and noise in adiabatic quantum pumps
- Quantum spin field effect transistor
- Geometry, Statistics and Asymptotics of Quantum Pumps
- Parametric pumping at finite frequency
- Effect of inelastic scattering on parametric pumping
- Charge Pumping in Mesoscopic Systems coupled to a Superconducting Lead
- Floquet scattering in parametric electron pumps
- Noise through Quantum Pumps
- Dephasing in a quantum pump
- Heat current in parametric quantum pump
- Scattering matrix ensemble for time-dependent transport through a chaotic quantum dot
- Quantization of adiabatic pumped charge in the presence of superconducting lead
- Floquet states and persistent currents transitions in a mesoscopic ring
- Carbon nanotube-based quantum pump in the presence of superconducting lead
- Conductance Fluctuations of Open Quantum Dots under Microwave Radiation
- Optimal quantum pump in the presence of a superconducting lead
Cited by in corpus (29)
- Adiabatic quantum pump in the presence of external ac voltages
- Spin Gauge Fields: from Berry Phase to Topological Spin Transport and Hall Effects
- Floquet scattering theory for current and heat noise in large amplitude adiabatic pumps
- Quantum spin pumping with adiabatically modulated magnetic barrier's
- Magnetic field symmetry of pump currents of adiabatically driven mesoscopic structures
- Non-abelian superconducting pumps
- Nonadiabatic charge pumping by oscillating potentials in one dimension: results for infinite system and finite ring
- Nonadiabatic charge pumping in a one-dimensional system of noninteracting electrons by an oscillating potential
- dc-Response of a Dissipative Driven Mesoscopic Ring
- Symmetry and environment effects on rectification mechanisms in quantum pumps
- Adiabatic pumping in a Superconductor-Normal-Superconductor weak link
- Quantum rings with time dependent spin-orbit coupling: Rabi oscillations, spintronic Schrodinger-cat states, and conductance properties
- Quantum pumping: Coherent Rings versus Open Conductors
- Equation of motion approach to non-adiabatic quantum charge pumping
- Charge transport in a Tomonaga-Luttinger liquid: effects of pumping and bias
- Effects of interaction on an adiabatic quantum electron pump
- Two-dimensional quantum rings with oscillating spin-orbit interaction strength: A wave function picture
- Floquet Formalism of Quantum Pumps
- Net current generation in a 1D quantum ring at zero magnetic field
- Quantum pump effect in one-dimensional systems of Dirac fermions
- Non-adiabatic generation of a pure spin current in a 1D quantum ring with spin-orbit interaction
- Finger-gate array quantum pumps:pumping characteristics and mechanisms
- Resonant all-electric spin pumping with spin-orbit coupling
- Persistent charge and spin currents in a 1D ring with Rashba and Dresselhaus spin-orbit interactions by excitation with a terahertz pulse
- Adiabatic charge pumping through a dot at the junction of N quantum wires
- Implementation of Nano-scale Rectifiers: An Exact Study
- Adiabatic quantum pumping through surface states in 3D topological insulators
- Persistent Currents in Normal Metal Rings (Yale PhD thesis)
- Nonadiabatic generation of spin currents in a quantum ring with Rashba and Dresselhaus spin-orbit interactions