We describe photon assisted tunneling (PAT) in single and coupled quantum dot systems which have a relatively large zero-dimensional (0D) level separation. A microwave electric field applied across the tunneling barrier leads to the formation of a sideband structure. For a single quantum dot system,
Transport spectroscopy of single and coupled quantum-dot systems
โ Scribed by R.J. Haug; R.H. Blick; T. Schmidt
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 503 KB
- Volume
- 212
- Category
- Article
- ISSN
- 0921-4526
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
We report a study of the coherent nonlinear optical response of individual excitons localized in GaAs quantum dots. Our data show that the nonlinear response is comprised of an incoherent contribution dominated by saturation of the oscillator strength and a coherent contribution giving rise to popul
Series of double quantum dots each with a size around 400 ร 400 nm 2 have been realized by delineating a 2DEG in modulation-doped AlGaAs/GaAs with 100 nm wide Schottky split gates fabricated by an electron-beam lithography and a lift-off technique. The split gate in the middle of the double dot allo
Single dot optical spectroscopy results obtained for CdTe and CdMnTe self-assembled quantum dots in ZnTe matrix are reported. In order to resolve the emission from individual dots apertures with diameter below 200 nm were opened in a metal masks. In the case of CdTe dots, sharp emission lines with a
We have fabricated single and coupled quantum dots in single-wall carbon nanotubes, and measured their electrical transport at low temperatures. The charging energy for single quantum dots seemed to depend on the gap between metallic contacts, and could be larger than room temperature for the smalle