Coulomb Promotion of Spin-Dependent Tunnelling

Abstract

We study transport of spin-polarized electrons through a magnetic single-electron transistor (SET) in the presence of an external magnetic field. Assuming the SET to have a nanometer size central island with a single electron level we find that the interplay on the island between coherent spin-flip dynamics and Coulomb interactions can make the Coulomb correlations promote rather than suppress the current through the device. We find the criteria for this new phenomenon -- Coulomb promotion of spin-dependent tunnelling -- to occur.

4 pages, 3 figures; The new version has a slightly modified title, 2 more figures, and an extended analysis of the (same) results obtained

References in corpus (6)

• Spintronics: Fundamentals and applications
• Full Counting Statistics of Charge Transfer in Coulomb Blockade Systems
• Microscopic derivation of rate equations for quantum transport
• Zeeman energy and spin relaxation in a one-electron quantum dot
• Rate equations for Coulomb blockade with ferromagnetic leads
• Quantum rate equations for electron transport through an interacting system in the sequential tunneling regime

Cited by in corpus (15)

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• Transport through a double quantum dot system with non-collinearly polarized leads
• Spin-detection in a quantum electromechanical shuttle system
• Theory of a Magnetically-Controlled Quantum-Dot Spin Transistor
• Exchange effects on electron transport through single-electron spin-valve transistors
• Kondo Shuttling in Nanoelectromechanical Single-Electron Transistor
• Controlling spin polarization of a quantum dot via a helical edge state
• Spin controlled nanomechanics induced by single-electron tunneling
• Spintromechanics of a Magnetic Nanoshuttle
• Magnetopolaronic effects in electron transport through a single-level vibrating quantum dot
• Electronic spin working mechanically
• Self-excited Oscillations of Charge-Spin Accumulation Due to Single-electron Tunneling
• Interplay of Vibration and Coulomb Effects in Transport of Spin-Polarized Electrons in a Single-Molecule Transistor
• Spin-Polaronic Effects in Electric Shuttling in a Single Molecule Transistor with Magnetic Leads
• Thermoelectric effects in tunneling of spin-polarized electrons in a molecular transistor