Substrate-induced array of quantum dots in a single-walled carbon nanotube
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- Substrate-induced array of quantum dots in a single-walled carbon nanotube
- Shin, Hyung-Joon; Clair, Sylvain; Kim, Yousoo; Kawai, Maki
- EPITAXIAL GRAPHENE; ROOM-TEMPERATURE; WAVE-FUNCTIONS; TRANSISTORS; INTERFERENCE; SCATTERING; SURFACES
- Issue Date
- NATURE PUBLISHING GROUP
- NATURE NANOTECHNOLOGY, v.4, no.9, pp.567 - 570
- Single-walled carbon nanotubes are model one-dimensional structures. They can also be made into zero-dimensional structures; quantum wells can be created in nanotubes by inserting metallofullerenes, by mechanical cutting or by the application of mechanical strain. Here, we report that quantum dot arrays can be produced inside nanotubes simply by causing a misalignment between the nanotube and the 100 direction of a supporting silver substrate. This method does not require chemical or physical treatment of either the substrate or the nanotube. A short quantum dot confinement length of 6nm results in large energy splittings.
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