Zero-dimensional states and single electron charging in quantum dots
- 7 September 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 69 (10) , 1592-1595
- https://doi.org/10.1103/physrevlett.69.1592
Abstract
We observe new transport effects in lateral quantum dots where zero-dimensional (0D) states and single electron charging coexist. In linear transport we see coherent resonant tunneling, described by a Landauer formula despite the many-body charging interaction. In the nonlinear regime, Coulomb oscillations of a quantum dot with about 25 electrons show structure due to 0D excited states as the bias voltage increases, and the current-voltage characteristic has a double-staircase shape.This publication has 14 references indexed in Scilit:
- Single-electron capacitance spectroscopy of discrete quantum levelsPhysical Review Letters, 1992
- Landauer formula for the current through an interacting electron regionPhysical Review Letters, 1992
- Confinement and single-electron tunneling in Schottky-gated, laterally squeezed double-barrier quantum-well heterostructuresPhysical Review Letters, 1992
- Single-electron charging of quantum-dot atomsPhysical Review Letters, 1992
- Observation of Single-Electron Charging in Double-Barrier HeterostructuresScience, 1992
- Single electron charging effects in semiconductor quantum dotsZeitschrift für Physik B Condensed Matter, 1991
- Transport spectroscopy of a Coulomb island in the quantum Hall regimePhysical Review Letters, 1991
- Observation of zero-dimensional states in a one-dimensional electron interferometerPhysical Review Letters, 1989
- Observation of discrete electronic states in a zero-dimensional semiconductor nanostructurePhysical Review Letters, 1988
- Quantized Hall conductance, current-carrying edge states, and the existence of extended states in a two-dimensional disordered potentialPhysical Review B, 1982