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

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.

4 figures, 5 pages

References in corpus (7)

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Cited by in corpus (4)

• Charge Transport in Disordered Graphene-Based Low Dimensional Materials
• Signatures of spin-orbit interaction in transport properties of finite carbon nanotubes in a parallel magnetic field
• Non-equilibrium Green's function study of magneto-conductance features and oscillations in clean and disordered nanowires
• Quantum Interference Effects in Topological Nanowires In a Longitudinal Magnetic Field