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Spin-orbit interaction in chiral carbon nanotubes probed in pulsed magnetic fields

S. H. Jhang, M. Marganska, Y. Skourski, D. Preusche, B. Witkamp, M. Grifoni, H. van der Zant, J. Wosnitza, and C. Strunk
Phys. Rev. B 82, 041404(R) – Published 15 July 2010
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Abstract

The magnetoconductance of an open carbon nanotube (CNT)-quantum wire was measured in pulsed magnetic fields. At low temperatures, we find a peculiar split magnetoconductance peak close to the charge-neutrality point. Our analysis of the data reveals that this splitting is intimately connected to the spin-orbit interaction and the tube chirality. Band-structure calculations suggest that the current in the peak regions is highly spin polarized, which calls for application in future CNT-based spintronic devices.

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  • Received 17 June 2010

DOI:https://doi.org/10.1103/PhysRevB.82.041404

©2010 American Physical Society

Authors & Affiliations

S. H. Jhang1, M. Marganska2, Y. Skourski3, D. Preusche1, B. Witkamp4, M. Grifoni2, H. van der Zant4, J. Wosnitza3, and C. Strunk1,*

  • 1Institute of Experimental and Applied Physics, University of Regensburg, 93040 Regensburg, Germany
  • 2Institute for Theoretical Physics, University of Regensburg, 93040 Regensburg, Germany
  • 3Dresden High Magnetic Field Laboratory, Forschungszentrum Dresden-Rossendorf, 01314 Dresden, Germany
  • 4Kavli Institute of Nanoscience, Delft University of Technology, 2628 CJ Delft, The Netherlands

  • *christoph.strunk@physik.uni-regensburg.de

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Issue

Vol. 82, Iss. 4 — 15 July 2010

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