Abstract
We report the realization of nanotube-based multiple quantum dots that are fully defined and controlled with electrostatic gates. Metallic top-gates are used to produce localized depletion regions in the underlying tubes; a pair of such depletion regions in a nanotube with ohmic contact electrodes defines the quantum dot. Top-gate voltages tune the transparencies of tunnel barriers as well as the electrostatic energies within single and multiple dots. This approach allows precise control over multiple devices on a single tube, and serves as a design paradigm for nanotube-based electronics and quantum systems.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1267-1271 |
| Number of pages | 5 |
| Journal | Nano letters |
| Volume | 5 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 2005 |
| Externally published | Yes |
ASJC Scopus subject areas
- Bioengineering
- General Chemistry
- General Materials Science
- Condensed Matter Physics
- Mechanical Engineering