Pumping spin with electrical fields

Abstract

Spin currents can be obtained through adiabatic pumping by means of electrical gating only. This is possible by making use of the tunability of the Rashba spin-orbit coupling in semiconductor heterostructures. We demonstrate the principles of this effect by considering a single-channel wire with a constriction. We also consider realistic structures, consisting of several open channels where subband spin-mixing and disorder are present, and we confirm our predictions. Two different ways to detect the spin-pumping effect, either using ferromagnetic leads or applying a magnetic field, are discussed.

5 pages, 2 figures; minor changes, typos corrected

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• Spin Gauge Fields: from Berry Phase to Topological Spin Transport and Hall Effects
• Floquet scattering theory for current and heat noise in large amplitude adiabatic pumps
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• Spin-Hall conductivity of a disordered 2D electron gas with Dresselhaus spin-orbit interaction
• Geometrical Pumping in Quantum Transport: Quantum Master Equation Approach
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• Spin current injection by intersubband transitions in quantum wells
• Magnetic field symmetry of pump currents of adiabatically driven mesoscopic structures
• Generation of spin current and polarization under dynamic gate control of spin-orbit interaction in low-dimensional semiconductor systems
• Semiclassical theory of weak antilocalization and spin relaxation in ballistic quantum dots
• Proposal for an on-demand source of polarized electrons into the edges of a topological insulator
• Electrical initialization and manipulation of electron spins in an L-shaped strained n-InGaAs channel
• Pumping in a mesoscopic ring with Ahronov-Casher effect
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• Charge and spin pumping through a double quantum dot
• Strain-Induced Coupling of Spin Current to Nanomechanical Oscillations
• Heat, molecular vibrations, and adiabatic driving in non-equilibrium transport through interacting quantum dots
• All-Electrical Quantum Computation with Mobile Spin Qubits
• Lewis-Riesenfeld approach to the solutions of Schrodinger equation in the presence of the presence of a time-dependent linear potential
• Adiabatic Charge Pumping through Quantum Dots in the Coulomb Blockade Regime
• Interaction-induced charge and spin pumping through a quantum dot at finite bias
• An optimal topological spin pump
• Quantum rings with time dependent spin-orbit coupling: Rabi oscillations, spintronic Schrodinger-cat states, and conductance properties
• A spin pump turnstile: parametric pumping of a spin-polarized current through a nearly-closed quantum dot
• Coherent spin ratchets: A spin-orbit based quantum ratchet mechanism for spin-polarized currents in ballistic conductors
• Zeeman ratchets: pure spin current generation in mesoscopic conductors with non-uniform magnetic fields
• Spin and charge optical conductivities in spin-orbit coupled systems
• Rashba spin precession in quantum Hall edge channels
• Statistical fluctuations of pumping and rectification currents in quantum dots
• A Topological Spin Chern Pump
• Andreev interference in adiabatic pumping
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• Purely electric spin pumping in one-dimension
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• Adiabatic pumping through a quantum dot in the Kondo regime: Exact results at the Toulouse limit
• Nonlocal pure spin current injection via quantum pumping and crossed Andreev reflection
• Geometric Fluctuation Theorem
• DC Spin Current Generation in a Rashba-type Quantum Channel
• Zeeman ratchets for ballistic spin currents
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• Non-adiabatic effect in quantum pumping for a spin-boson system
• Adiabatic pumping through an interacting quantum dot with spin-orbit coupling
• Analytical Solution of (2+1) Dimensional Dirac Equation in Time-Dependent Noncommutative Phase-Space
• Resonant all-electric spin pumping with spin-orbit coupling
• DC spin generation by junctions with AC driven spin-orbit interaction
• Nanomechanical Spin-Polarizer
• Detecting a true quantum pump effect
• Photovoltaic effect generated by spin-orbit interactions
• Tunable polarization in beam-splitter based on 2D topological insulators
• Ultrafast all-optical generation of pure spin and valley currents
• Universal Spin Dynamics in Quantum Wires
• Resonant tunneling-based spin ratchets
• Pumping in quantum dots and non-Abelian matrix Berry phases
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• Gate-controlled Spin Extraction from Topological Insulator Surfaces
• Resolving the order parameter of High-T${}_c$ Superconductors through quantum pumping spectroscopy
• Charge transport by modulating spin-orbit gauge fields for quasi-onedimensional holes
• Fermi liquid theory of resonant spin pumping
• Dynamical Spin-Orbit-Based Spin Transistor