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  • Buitelaar, M. R., et al. (author)
  • Pauli spin blockade in carbon nanotube double quantum dots
  • 2008
  • In: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 77:24, s. 245439-
  • Journal article (peer-reviewed)abstract
    • We report Pauli spin blockade in a carbon nanotube double quantum dot defined by tunnel barriers at the contacts and a structural defect in the nanotube. We observe a pronounced current suppression for negative source-drain bias voltages, which is investigated for both symmetric and asymmetric coupling of the quantum dots to the leads. The measured differential conductance agrees well with a theoretical model of a double quantum dot system in the spin-blockade regime, which allows us to estimate the occupation probabilities of the relevant singlet and triplet states. This work shows that effective spin-to-charge conversion in nanotube quantum dots is feasible and opens the possibility of single-spin readout in a material that is not limited by hyperfine interaction with nuclear spins.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Fransson, J (1)
Anderson, D (1)
Buitelaar, M. R. (1)
Cantone, A. L. (1)
Smith, C. G. (1)
Jones, G. A. C. (1)
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Ardavan, A. (1)
Khlobystov, A. N. (1)
Watt, A. A. R. (1)
Porfyrakis, K. (1)
Briggs, G. A. D. (1)
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University
Uppsala University (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
2008 (1)

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