Theory of shot noise in single-walled metallic carbon nanotubes weakly coupled to nonmagnetic and ferromagnetic leads

Abstract

We present theoretical study of shot noise in single wall metallic carbon nanotubes weakly coupled to either nonmagnetic or ferromagnetic leads. Using the real-time diagrammatic technique, we calculate the current, Fano factor and tunnel magnetoresistance in the sequential tunneling regime. It is shown that the differential conductance displays characteristic four-fold periodicity, indicating single-electron charging. Such a periodicity is also visible in tunnel magnetoresistance of the system as well as in the Fano factor. The present studies elucidate the impact of ferromagnetic (vs. nonmagnetic) contacts on the transport characteristics under consideration.

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• Spin-induced charge correlations in transport through interacting quantum dots with ferromagnetic leads
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• Spin polarized current and shot noise in carbon nanotube quantum dot in the Kondo regime
• Spin diode based on a single-wall carbon nanotube
• Transport through single-wall metallic carbon nanotubes in the cotunneling regime
• Manifestation of the shape and edge effects in spin-resolved transport through graphene quantum dots
• Enhanced shot noise in asymmetric interacting two level systems
• Influence of spin waves on transport through a quantum-dot spin valve
• What can we learn about the dynamics of transported spins by measuring shot noise in spin-orbit-coupled nanostructures?
• Exchange effects in spin polarized transport through carbon nanotube quantum dots
• Charge transport through weakly open one dimensional quantum wires
• Strongly correlated charge transport in silicon MOSFET quantum dots
• Dependence of electronic and optical properties on a high-frequency field for carbon nanotubes