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Disorder-mediated electron valley resonance in carbon nanotube quantum dots

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2011

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http://nbn-resolving.de/urn:nbn:de:bsz:352-191630
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https://doi.org/10.1103/PhysRevLett.106.086801
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Physical Review Letters. 2011, 106(8). ISSN 0031-9007. Available under: doi: 10.1103/PhysRevLett.106.086801

Zusammenfassung

We propose a scheme for coherent rotation of the valley isospin of a single electron confined in a carbon nanotube quantum dot. The scheme exploits the ubiquitous atomic disorder of the nanotube crystal lattice, which induces time-dependent valley mixing as the confined electron is pushed back and forth along the nanotube axis by an applied ac electric field. Using experimentally determined values for the disorder strength we estimate that valley Rabi oscillations with a period on the nanosecond time scale are feasible. The valley resonance effect can be detected in the electric current through a double quantum dot in the single-electron transport regime.

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ISO 690PÁLYI, András, Guido BURKARD, 2011. Disorder-mediated electron valley resonance in carbon nanotube quantum dots. In: Physical Review Letters. 2011, 106(8). ISSN 0031-9007. Available under: doi: 10.1103/PhysRevLett.106.086801
BibTex
@article{Palyi2011Disor-19163,
  year={2011},
  doi={10.1103/PhysRevLett.106.086801},
  title={Disorder-mediated electron valley resonance in carbon nanotube quantum dots},
  number={8},
  volume={106},
  issn={0031-9007},
  journal={Physical Review Letters},
  author={Pályi, András and Burkard, Guido}
}
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