Magnetoconductance of carbon nanotube p-n junctions

Abstract

The magnetoconductance of p-n junctions formed in clean single wall carbon nanotubes is studied in the noninteracting electron approximation and perturbatively in electron-electron interaction, in the geometry where a magnetic field is along the tube axis. For long junctions the low temperature magnetoconductance is anomalously large: the relative change in the conductance becomes of order unity even when the flux through the tube is much smaller than the flux quantum. The magnetoconductance is negative for metallic tubes. For semiconducting and small gap tubes the magnetoconductance is nonmonotonic; positive at small and negative at large fields.

5 pages, 2 figures

References in corpus (9)

• Size, Shape and Low Energy Electronic Structure of Carbon Nanotubes
• Selective transmission of Dirac electrons and ballistic magnetoresistance of \textit{n-p} junctions in graphene
• Tunneling in One-Dimensional non-Luttinger Electron Liquid
• The Aharonov-Bohm Interference and Beating in Single-Walled Carbon Nanotube Interferometers
• Chirality effects in carbon nanotubes
• Magnetic field asymmetry of nonlinear transport in carbon nanotubes
• Sample-specific and Ensemble-averaged Magnetoconductance of Individual Single-Wall Carbon Nanotubes
• Nonlinear magnetotransport in interacting chiral nanotubes
• Electrostatics of straight and bent nanotubes

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• Nonlinear screening and ballistic transport in a graphene p-n junction
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• Effect of Klein tunneling on conductance and shot noise in ballistic graphene
• Common-Path Interference and Zener Tunneling in Bilayer Graphene p-n Junctions
• Negative differential resistances with back gate-controlled lowest operation windows in graphene double barrier resonant tunneling diodes
• Robust Low-Bias Negative Differential Resistance in Graphene Superlattices
• Zener tunneling in the electrical transport of quasi-metallic carbon nanotubes
• Klein tunneling and magnetoresistance of \textit{p-n} junctions in Weyl semimetals
• Quantum criticality in a Mott pn-junction in an armchair carbon nanotube