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Competition between magnetic field dependent band structure and coherent backscattering in multiwall carbon nanotubes

B. Stojetz·S. Roche·C. Miko·F. Triozon·L. Forro·C. Strunk
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Abstract

Magnetotransport measurements in large diameter multiwall carbon nanotubes (20-40 nm) demonstrate the competition of a magnetic-field dependent bandstructure and Altshuler-Aronov-Spivak oscillations. By means of an efficient capacitive coupling to a backgate electrode, the magnetoconductance oscillations are explored as a function of Fermi level shift. Changing the magnetic field orientation with respect to the tube axis and by ensemble averaging, allows to identify the contributions of different Aharonov-Bohm phases. The results are in qualitative agreement with numerical calculations of the band structure and the conductance.

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B. Stojetz, S. Roche, C. Miko, F. Triozon, L. Forro, C. Strunk. 2006-07-03. Competition between magnetic field dependent band structure and coherent backscattering in multiwall carbon nanotubes. https://doi.org/10.1088/1367-2630%2F9%2F3%2F056

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