Spin-Polarized Transprot through Double Quantum Dots

Abstract

We investigate spin-polarized transport phenomena through double quantum dots coupled to ferromagnetic leads in series. By means of the slave-boson mean-field approximation, we calculate the conductance in the Kondo regime for two different configurations of the leads: spin-polarization of two ferromagnetic leads is parallel or anti-parallel. It is found that transport shows some remarkable properties depending on the tunneling strength between two dots. These properties are explained in terms of the Kondo resonances in the local density of states.

8 pages, 11 figures

References in corpus (4)

• Kondo effect in quantum dots coupled to ferromagnetic leads
• Transition between Quantum States in a Parallel-Coupled Double-Quantum-Dot
• Kondo effect in a quantum dot coupled to ferromagnetic leads: A numerical renormalization group analysis
• Nonequilibrium spintronic transport through an artificial Kondo impurity: Conductance, magnetoresistance and shot noise

Cited by in corpus (16)

• Thermoelectric effects in strongly interacting quantum dot coupled to ferromagnetic leads
• Interference Effects on Kondo-Assisted Transport through Double Quantum Dots
• Kondo-Dicke resonances in electronic transport through triple quantum dots
• Tunable Kondo effect in double quantum dots coupled to ferromagnetic contacts
• Transport through a double quantum dot system with non-collinearly polarized leads
• Waiting time distribution revealing the internal spin dynamics in a double quantum dot
• Kondo Effect in Multiple-Dot Systems
• Charge and spin configurations in the coupled quantum dots with Coulomb correlations induced by tunneling current
• Thermoelectric effects in a strongly interacting quantum dot coupled to ferromagnetic leads
• Spin-orbital and spin Kondo effects in parallel coupled quantum dots
• Spin-polarized transport through weakly coupled double quantum dots in the Coulomb-blockade regime
• Compensation of the Kondo effect in quantum dots coupled to ferromagnetic leads within equation of motion approach
• Time-dependent single electron tunneling through a shuttling nano-island
• Aharonov-Bohm Effect for Parallel and T-shaped Double Quantum Dots
• Pauli spin blockade with site-dependent g-tensors and spin-polarized leads
• Residual Kondo effect in quantum dot coupled to half-metallic ferromagnets