Abstract
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 ...
Abstract
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 the contributions of different Aharonov�Bohm phases to be identified. The results are in qualitative agreement with numerical calculations of the band structure and the conductance.
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