Current and Shot Noise Measurements in a Carbon Nanotube-Based Spin Diode

Abstract

Low-temperature measurements of asymmetric carbon nanotube (CNT) quantum dots are reported. The CNTs are end-contacted with one ferromagnetic and one normal-metal electrode. The measurements show a spin-dependent rectification of the current caused by the asymmetry of the device. This rectification occurs for gate voltages for which the normal-metal lead is resonant with a level of the quantum dot. At the gate voltages at which the current is at the maximum current, a significant decrease in the current shot noise is observed.

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Cited by in corpus (10)

• Transport through quantum-dot spin valves containing magnetic impurities
• Electronic waiting-time distribution of a quantum-dot spin valve
• Spin-induced charge correlations in transport through interacting quantum dots with ferromagnetic leads
• Probing the exchange field of a quantum-dot spin valve by a superconducting lead
• Theory of transport through noncollinear single-electron spin-valve transistors
• Theory of spin-coherent transport through a defect spin state in a metal/ferromagnet tunnel junction during ferromagnetic resonance
• Study of couplings effect on the performance of a spin-current diode: Nonequilibrium Green's function based model
• Current fluctuations of noncollinear single-electron spin-valve transistors
• Influence of spin-flip on the performance of the spin-diode
• Spin-current rectification through a quantum dot using temperature bias