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Individual single-wall carbon nanotubes as quantum wires

Author

Listed:
  • Sander J. Tans

    (Delft University of Technology)

  • Michel H. Devoret

    (Delft University of Technology
    Service de Physique de l'Etat Condensé, CEA-Saclay)

  • Hongjie Dai

    (Rice University)

  • Andreas Thess

    (Rice University)

  • Richard E. Smalley

    (Rice University)

  • L. J. Geerligs

    (Delft University of Technology)

  • Cees Dekker

    (Delft University of Technology)

Abstract

Carbon nanotubes have been regarded since their discovery1 as potential molecular quantum wires. In the case of multi-wall nanotubes, where many tubes are arranged in a coaxial fashion, the electrical properties of individual tubes have been shown to vary strongly from tube to tube2,3, and to be characterized by disorder and localization4. Single-wall nanotubes5,6 (SWNTs) have recently been obtained with high yields and structural uniformity7. Particular varieties of these highly symmetric structures have been predicted to be metallic, with electrical conduction occurring through only two electronic modes8–10. Because of the structural symmetry and stiffness of SWNTs, their molecular wavefunctions may extend over the entire tube. Here we report electrical transport measurements on individual single-wall nanotubes that confirm these theoretical predictions. We find that SWNTs indeed act as genuine quantum wires. Electrical conduction seems to occur through well separated, discrete electron states that are quantum-mechanically coherent over long distance, that is at least from contact to contact (140nm). Data in a magnetic field indicate shifting of these states due to the Zeeman effect.

Suggested Citation

  • Sander J. Tans & Michel H. Devoret & Hongjie Dai & Andreas Thess & Richard E. Smalley & L. J. Geerligs & Cees Dekker, 1997. "Individual single-wall carbon nanotubes as quantum wires," Nature, Nature, vol. 386(6624), pages 474-477, April.
    • Handle: RePEc:nat:nature:v:386:y:1997:i:6624:d:10.1038_386474a0
    DOI: 10.1038/386474a0
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    Cited by:

    1. Aakash, & Bhattacharyay, A., 2023. "Room temperature flashing Ratcheting in nano-channels," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 622(C).
    2. Kiani, Keivan, 2015. "Nanomechanical sensors based on elastically supported double-walled carbon nanotubes," Applied Mathematics and Computation, Elsevier, vol. 270(C), pages 216-241.
    3. Jia-Shiang Chen & Kasidet Jing Trerayapiwat & Lei Sun & Matthew D. Krzyaniak & Michael R. Wasielewski & Tijana Rajh & Sahar Sharifzadeh & Xuedan Ma, 2023. "Long-lived electronic spin qubits in single-walled carbon nanotubes," Nature Communications, Nature, vol. 14(1), pages 1-8, December.

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