Counterflow of electrons in two isolated quantum point contacts
arXiv:0704.0132 · doi:10.1103/PhysRevLett.99.096803
Abstract
We study the interaction between two adjacent but electrically isolated quantum point contacts (QPCs). At high enough source-drain bias on one QPC, the drive QPC, we detect a finite electric current in the second, unbiased, detector QPC. The current generated at the detector QPC always flows in the opposite direction than the current of the drive QPC. The generated current is maximal, if the detector QPC is tuned to a transition region between its quantized conductance plateaus and the drive QPC is almost pinched-off. We interpret this counterflow phenomenon in terms of an asymmetric phonon-induced excitation of electrons in the leads of the detector QPC.
as published
References in corpus (6)
- Bias and temperature dependence of the 0.7 conductance anomaly in Quantum Point Contacts
- Thermo-Electric Properties of Quantum Point Contacts
- A double-dot quantum ratchet driven by an independently biased quantum point contact
- Coulomb drag between ballistic one-dimensional electron systems
- Negative Electron Drag and Hole-Like behavior in the Integer Quantum Hall Regime
- Spin effects in the magneto-drag between double quantum wells
Cited by in corpus (19)
- Keldysh technique and non-linear sigma-model: basic principles and applications
- Coulomb drag
- Coulomb drag in quantum circuits
- Phonon-mediated vs. Coulombic Back-Action in Quantum Dot circuits
- Relaxation of hot electrons in a degenerate two-dimensional electron system: transition to one-dimensional scattering
- Phonon-mediated non-equilibrium interaction between nanoscale devices
- Coulomb drag between ballistic quantum wires
- Bolometric Detection of Quantum Shot Noise in Coupled Mesoscopic Systems
- Multitask quantum thermal machines and cooperative effects
- Engineering drag currents in Coulomb coupled quantum dots
- The Coulomb drag effect induced by the third cumulant of current
- Acoustic phonon-based interaction between coplanar quantum circuits in magnetic field
- Nonequilibrium interactions between two quantum circuits
- Quantum thermocouples: nonlocal conversion and control of heat in nanostructures
- Performance of the T-matrix based master equation for Coulomb drag in double quantum dots
- Nonequilibrium phenomena in adjacent electrically isolated nanostructures
- Coulomb drag and heat transfer in strange metals
- Coulomb drag and depinning in bilinear Josephson junction arrays
- Heat-Driven Electron-Motion in a Nanoscale Electronic Circuit