Exchange effects on electron transport through single-electron spin-valve transistors

Abstract

We study electron transport through single-electron spin-valve transistors in the presence of non-local exchange between the ferromagnetic leads and the central normal-metal island. The Coulomb interaction is described with the orthodox model for Coulomb blockade and we allow for noncollinear lead magnetization directions. Two distinct exchange mechanisms that have been discussed in the literature are shown to be of comparable strength and are taken into account on equal footing. We present results for the linear conductance as a function of gate voltage and magnetic configuration, and discuss the response of the system to applied magnetic fields.

15 pages, 6 figures

References in corpus (34)

• Anatomy of Spin-Transfer Torque
• Finite-element theory of transport in ferromagnet-normal metal systems
• Non-collinear Magnetoelectronics
• Electric Field Control of Spin Transport
• Kondo effect in quantum dots coupled to ferromagnetic leads
• The Role of Spin-Dependent Interface Scattering in Generating Current-Induced Torques in Magnetic Multilayers
• Spin Torques in Ferromagnetic/Normal Metal Structures
• Theory of Transport through Quantum-Dot Spin Valves in the Weak-Coupling Regime
• Spin-transport in multi-terminal normal metal - ferromagnet systems with non-collinear magnetizations
• Interaction-driven spin precession in quantum-dot spin valves
• Nonequilibrium spintronic transport through an artificial Kondo impurity: Conductance, magnetoresistance and shot noise
• Spin-Dependent Transport Through An Interacting Quantum Dot
• Absolute spin-valve effect with superconducting proximity structures
• Rate equations for Coulomb blockade with ferromagnetic leads
• Spin injection in a single metallic nanoparticle: a step towards nanospintronics
• Spin effects in electron tunnelling through a quantum dot coupled to non-collinearly polarized ferromagnetic leads
• Using single quantum states as spin filters to study spin polarization in ferromagnets
• Spin-dependent Quantum Interference in Single-Wall Carbon Nanotubes with Ferromagnetic Contacts
• Magnetoresistance of the double-tunnel-junction Coulomb Blockade with magnetic metals
• Spin Current and Current-Induced Spin Transfer Torque in Ferromagnet-Quantum Dot-Ferromagnet Coupled Systems
• Spin-dependent transport in a Luttinger liquid
• Non-equilibrium spin accumulation in ferromagnetic single-electron transistors
• Nonequilibrium spin distribution in single-electron transistor
• Spin-Polarized Electron Transport through Nanometer-Scale Al Grains
• Coulomb Promotion of Spin-Dependent Tunnelling
• Non-collinear single-electron spin-valve transistors
• Non-collinear magnetoconductance of a quantum dot
• Controlling spin in an electronic interferometer with spin-active interfaces
• Dynamic ferromagnetic proximity effect in photoexcited semiconductors
• Angular Conductance Resonances of Quantum Dots Non-Collinearly Coupled to Ferromagnetic Leads
• Spin current through a tunnel junction
• Linear response conductance and magneto-resistance of ferromagnetic single-electron transistors
• Theory of Spin Torque in a nanomagnet
• Spin Transport in a Quantum Wire

Cited by in corpus (11)

• Transport through a double quantum dot system with non-collinearly polarized leads
• Spectroscopy and critical temperature of diffusive superconducting/ferromagnetic hybrid structures with spin-active interfaces
• Spin transport across carbon nanotube quantum dots
• Conductance and current noise of a superconductor/ferromagnet quantum point contact
• Theory of a Magnetically-Controlled Quantum-Dot Spin Transistor
• Saturation of Spin-Polarized Current in Nanometer Scale Aluminum Grains
• Tunneling-induced renormalization in interacting quantum dots
• Theory of transport through noncollinear single-electron spin-valve transistors
• Modelling Electron Spin Accumulation in a Metallic Nanoparticle
• Charge and spin transport in spin valves with anisotropic spin relaxation
• Current fluctuations of noncollinear single-electron spin-valve transistors