Single electron transport in nanocrystals and nanotubes
Conference
·
OSTI ID:560077
- Lawrence Berkeley National Lab., CA (United States)
Electrical measurements have proven to be a powerful spectroscopic tool for exploring the properties of lithographically patterned quantum dots. In this talk, we will discuss our efforts to extend these measurements to chemically-derived nanostructures. In particular, we will present results on electrical transport through two systems: CdSe nanocrystals and carbon nanotube bundles. To make these devices, lithographic patterning is used to define electrical contacts to a single nanocrystal or nanotube bundle. Further, an electrostatic gate is used to control the charge state of the system. In both types of devices, the Coulomb blockade of single electron tunneling is visible in the I-V curves, and Coulomb oscillations are observed in the conductance versus gate voltage. These measurements are used to determine the charging energies and energy-level spacing for both the nanotubes and the nanocrystals.
- OSTI ID:
- 560077
- Report Number(s):
- CONF-970443--
- Country of Publication:
- United States
- Language:
- English
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