Spin pairs in a weakly coupled many-electron quantum dot
arXiv:1509.08096 · doi:10.1103/PhysRevB.92.115401
Abstract
We report the observation of an unusually large number of consecutive spin pairs in a weakly coupled many-electron GaAs/AlGaAs quantum dot. The pairs are identified due to pairwise parallel shifts of Coulomb resonances in a perpendicular magnetic field. Using a nearby quantum point contact for time-resolved charge detection, the tunneling rates are investigated as a function of gate voltage and magnetic field. We compare our experimental data to a single-level transport model and discuss possible reasons for deviations.
7 pages, 4 figures
References in corpus (10)
- The Statistical Theory of Quantum Dots
- Quantum Effects in Coulomb Blockade
- Electron-hole symmetry in a semiconducting carbon nanotube quantum dot
- Multi-wall carbon nanotubes as quantum dots
- Shell filling in closed single-wall carbon nanotube quantum dots
- Electron counting in quantum dots
- Spin States in Graphene Quantum Dots
- Four-electron shell structures and an interacting two-electron system in carbon nanotube quantum dots
- Many-Body Physics and Quantum Chaos
- Singlet-Triplet Transition Tuned by Asymmetric Gate Voltages in a Quantum Ring