Adiabatic pumping through an interacting quantum dot with spin-orbit coupling

Abstract

We study adiabatic pumping through a two-level quantum dot with spin-orbit coupling. Using a diagrammatic real-time approach, we calculate both the pumped charge and spin for a periodic variation of the dot's energy levels in the limit of weak tunnel coupling. Thereby, we compare the two limits of vanishing and infinitely large charging energy on the quantum dot. We discuss the dependence of the pumped charge and pumped spin on gate voltages, the symmetry in the tunnel-matrix elements and spin-orbit coupling strength. We identify the possibility to generate pure spin currents in the absence of charge currents.

References in corpus (11)

• Adiabatic pumping through interacting quantum dots
• Robust single-parameter quantized charge pumping
• Charge pumping in carbon nanotube quantum dots
• Adiabatic charge and spin pumping through quantum dots with ferromagnetic leads
• Transport through quantum-dot spin valves containing magnetic impurities
• Josephson current through interacting double quantum dots with spin-orbit coupling
• Tunable dynamical channel blockade in double-dot Aharonov-Bohm interferometers
• Charge and spin pumping through a double quantum dot
• Generation of Spin Entanglement in Nonequilibrium Quantum Dots
• Interplay of Coulomb interaction and spin-orbit effects in multi-level quantum dots
• Quantum Dot Spin Filter in Resonant Tunneling and Kondo Regimes