Spin Hall Current Driven by Quantum Interferences in Mesoscopic Rashba Rings

Abstract

We propose an all-electrical nanoscopic structure where {\em pure} spin current is induced in the transverse voltage probes attached to {\em quantum-coherent} one-dimensional ring when conventional unpolarized charge current is injected through its longitudinal leads. Tuning of the Rashba spin-orbit coupling in semiconductor heterostructure hosting the ring generates quasi-periodic oscillations of the predicted spin Hall current due to {\em spin-sensitive quantum-interference effects} caused by the difference in Aharonov-Casher phase acquired by opposite spins states traveling clockwise and counterclockwise. Its amplitude is comparable to the mesoscopic spin Hall current predicted for finite-size two-dimensional electron gases, while it gets reduced in wide two-dimensional or disordered rings.

5 pages, 4 color figures

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Cited by in corpus (43)

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• Quantum rings as electron spin beam splitters
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• Decoherence of transported spin in multichannel spin-orbit coupled spintronic devices: Scattering approach to spin density matrix from the ballistic to the localized regime
• Mesoscopic Spin Hall Effect in Multiprobe Ballistic Spin-Orbit Coupled Semiconductor Bridges
• Spin-orbit coupling and spin transport
• Networks of quantum nanorings: programmable spintronic devices
• Transverse Spin-Orbit Force in the Spin Hall Effect in Ballistic Semiconductor Wires
• Spin Dynamics and Spin Transport
• Anisotropic spin transport in two-terminal mesoscopic rings: the Rashba and Dresselhaus spin-orbit interactions
• Effects of interactions in transport through Aharonov-Bohm-Casher interferometers
• Stability of spintronic devices based on quantum ring networks
• Spin filter using a semiconductor quantum ring side-coupled to a quantum wire
• Magnetoconductance properties of rectangular arrays of spintronic quantum rings
• Aharonov-Casher and spin Hall effects in two-dimensional mesoscopic ring structures with strong spin-orbit interaction
• Determination of Rashba and Dresselhaus spin-orbit fields
• Spin accumulation in ballistic Rashba bar
• Interference induced preparation of spinpolarized electrons in a three-terminal quantum ring
• Quantum rings with time dependent spin-orbit coupling: Rabi oscillations, spintronic Schrodinger-cat states, and conductance properties
• Longitudinal and spin-Hall conductance of a two-dimensional Rashba system with arbitrary disorder
• Filtering of spin currents based on ballistic ring
• Spin transport in mesoscopic rings with inhomogeneous spin-orbit coupling
• Spin Hall effect due to intersubband-induced spin-orbit interaction in symmetric quantum wells
• Spin Hall effect in a Kagome lattice driven by Rashba spin-orbit interaction
• Kinetic theory of spin-polarized systems in electric and magnetic fields with spin-orbit coupling: I. Kinetic equation and anomalous Hall and spin-Hall effects
• What can we learn about the dynamics of transported spins by measuring shot noise in spin-orbit-coupled nanostructures?
• Spin-charge conversion in multiterminal Aharonov-Casher ring coupled to precessing ferromagnets: A charge conserving Floquet-nonequilibrium Green function approach
• Bias induced circular spin current: Effects of environmental dephasing and disorder
• Spin Hall Effect and Spin Orbit coupling in Ballistic Nanojunctions
• Sagnac Rotational Phase Shifts in a Mesoscopic Electron Interferometer with Spin-Orbit Interactions
• Local equilibrium charge and spin currents in two-dimensional topological systems
• All-Optical Generation and Tuning of Ultrafast Spin-Hall Current via Optical Vortices
• Spin and Charge Shot Noise in Mesoscopic Spin Hall Systems
• Two impurity Kondo problem under Aharonov--Bohm and Aharonov--Casher Effects
• Rashba-induced transverse pure spin currents in a four-terminal quantum dot ring
• Detection of spin bias in four-terminal quantum-dot ring
• Theory of Spin Hall Effects in Semiconductors
• Quantum Transport in Ladder-Type Networks: Role of nonlinearity, topology and spin
• Rashba diamond in an Aharonov-Casher ring
• Observation of quantum interference conductance fluctuations in metal rings with strong spin-orbit coupling
• Oscillating spin-orbit interaction as a source of spin-polarized wave packets in two-terminal nanoscale devices
• General method for calculating transport properties of disordered mesoscopic systems based on the nonequilibrium Green's function formalism