What can we learn about the dynamics of transported spins by measuring shot noise in spin-orbit-coupled nanostructures?
arXiv:0901.4182 · doi:10.1088/0268-1242/24/6/064006
Abstract
We review recent studies of the shot noise of spin-polarized charge currents and pure spin currents in multiterminal semiconductor nanostructures, while focusing on the effects brought by the intrinsic Rashba spin-orbit (SO) coupling and/or extrinsic SO scattering off impurities in two-dimensional electron gas (2DEG) based devices. By generalizing the scattering theory of quantum shot noise to include the full spin-density matrix of electrons injected from a spin-filtering electrode, we show how decoherence and dephasing in the course of spin precession can lead to substantial enhancement of the Fano factor (noise-to-current ratio) of spin-polarized charge currents. In four-terminal SO-coupled nanostructures, injection of unpolarized charge current through the longitudinal leads is responsible not only for the pure spin Hall current in the transverse leads, but also for nonequilibrium random time-dependent current fluctuations. The analysis of the shot noise of transverse pure spin Hall current and zero charge current, or transverse spin current and non-zero charge Hall current, driven by unpolarized or spin-polarized injected longitudinal charge current, respectively, reveals a unique experimental tool to differentiate between the intrinsic Rashba and extrinsic SO mechanisms underlying the spin Hall effect in 2DEG devices. Finally, we discuss the shot noise of transverse spin and zero charge currents in the quantum-interference-driven spin Hall effect in ballistic four-terminal Aharonov-Casher rings realized using high-mobility 2DEG with the Rashba SO coupling.
arXiv comment41 pages, 13 figures; review article to appear in the special issue of Semiconductor Science and Technology on "The effects of spin-orbit interaction on charge transport"
References in corpus (88)
- Spin Hall effect
- Shot Noise in Mesoscopic Conductors
- Random-Matrix Theory of Quantum Transport
- Universal Intrinsic Spin-Hall Effect
- Dissipationless Quantum Spin Current at Room Temperature
- Direct electronic measurement of the spin Hall effect
- Andreev reflection and Klein tunneling in graphene
- Room Temperature Reversible Spin Hall Effect
- Semiconductor Spintronics
- An Electronic Mach-Zehnder Interferometer
- Spin current and polarization in impure 2D electron systems with spin-orbit coupling
- Intrinsic spin Hall effect in platinum metal
- Spatial imaging of the spin Hall effect and current-induced polarization in two-dimensional electron gases
- Suppression of the Persistent Spin Hall Current by Defect Scattering
- Semiclassical theories of the anomalous Hall effect
- Spin interference effects in ring conductors subject to Rashba coupling
- Shot Noise in Ballistic Graphene
- Spin-dependent (magneto)transport through a ring due to spin-orbit interaction
- Direct observation of the Aharonov-Casher phase
- Quantum Shot Noise
- Positive cross-correlations in a three-terminal quantum dot with ferromagnetic contacts
- Can Non-Equilibrium Spin Hall Accumulation be Induced in Ballistic Nanostructures?
- The 1/3-shot noise suppression in diffusive nanowires
- Imaging mesoscopic spin Hall flow: Spatial distribution of local spin currents and spin densities in and out of multiterminal spin-orbit coupled semiconductor nanostructures
- Manifestation of the spin-Hall effect through transport measurements in the mesoscopic regime
- Rashba spin-orbit interaction and shot noise for spin-polarized and entangled electrons
- Suppression of Spin Relaxation in Submicron InGaAs Wires
- Decoherence of transported spin in multichannel spin-orbit coupled spintronic devices: Scattering approach to spin density matrix from the ballistic to the localized regime
- Shot Noise Detection on a Carbon Nanotube Quantum Dot
- Transport through anisotropic magnetic molecules with partially ferromagnetic leads: Spin-charge conversion and negative differential conductance
- Thermal radiation and amplified spontaneous emission from a random medium
- Current and power spectrum in a magnetic tunnel device with an atomic size spacer
- Mesoscopic Spin Hall Effect in Multiprobe Ballistic Spin-Orbit Coupled Semiconductor Bridges
- Waveguide diffusion modes and slowdown of D'yakonov-Perel' spin relaxation in narrow 2-D semiconductor channels
- Modulating Unpolarized Current in Quantum Spintronics: Visibility of Spin-Interference Effects in Multichannel Aharonov-Casher Mesoscopic Rings
- Spin effects in single electron tunneling
- Shot noise in chaotic systems: "classical" to quantum crossover
- Spin relaxation dynamics of quasiclassical electrons in ballistic quantum dots with strong spin-orbit coupling
- Noise in Multiterminal Diffusive Conductors: Universality, Nonlocality and Exchange Effects
- Shot Noise by Quantum Scattering in Chaotic Cavities
- Spin Hall Current Driven by Quantum Interferences in Mesoscopic Rashba Rings
- Universal spin-Hall conductance fluctuations in two dimensions
- Shot Noise with Interaction Effects in Single Walled Carbon Nanotubes
- Charge Hall effect driven by spin-dependent chemical potential gradients and Onsager relations in mesoscopic systems
- Shot Noise in Anyonic Mach-Zehnder Interferometer
- Spin-polarized current and shot noise in the presence of spin flip in a quantum dot via nonequilibrium Green's functions
- Spin current shot noise as a probe of interactions in mesoscopic systems
- Shot noise in carbon nanotube based Fabry-Perot interferometers
- Shot noise in ferromagnetic single electron tunneling devices
- Mesoscopic Spin Hall Effect
- Shot Noise in Magnetic Tunnel Junctions: Evidence for Sequential Tunneling
- Quantum-to-classical correspondence in open chaotic systems
- Effects of dephasing on shot-noise in an electronic Mach-Zehnder interferometer
- Rashba spin splitting in quantum wires
- Hall-like effect induced by spin-orbit interaction
- Shot noise and spin-orbit coherent control of entangled and spin polarized electrons
- Evanescent wave transport and shot noise in graphene: ballistic regime and effect of disorder
- Shot noise in ferromagnet--normal metal systems
- Shot noise in a diffusive F-N-F spin valve
- Spin-Flip Noise in a Multi-Terminal Spin-Valve
- "Phase Diagram" of the Spin Hall Effect
- Shot noise in diffusive conductors: A quantitative analysis of electron-phonon interaction effects
- Spin-Hall edge spin polarization in a ballistic 2D electron system
- Shot noise of spin polarized electrons
- Full Counting Statistics of Spin Currents
- Shot noise of spin current
- Aharonov-Casher and spin Hall effects in two-dimensional mesoscopic ring structures with strong spin-orbit interaction
- Phase Sensitive Shot Noise in an Andreev Interferometer
- Theory of shot noise in single-walled metallic carbon nanotubes weakly coupled to nonmagnetic and ferromagnetic leads
- Shot Noise of Spin-Decohering Transport in Spin-Orbit Coupled Nanostructures
- Spin current and shot noise from a quantum dot coupled to a quantized cavity field
- Electron heating in metallic resistors at sub-Kelvin temperature
- Spin transport in mesoscopic rings with inhomogeneous spin-orbit coupling
- Determining the spin Hall conductance via charge transport
- Quantum Rings with Rashba spin orbit coupling: a path integral approach
- Shot noise of spin current in ferromagnet-normal-metal systems
- Shot Noise in Linear Macroscopic Resistors
- Extrinsic Entwined with Intrinsic Spin Hall Effect in Disordered Mesoscopic Bars
- Semiclassical theory of spin-polarized shot noise in mesoscopic diffusive conductors
- Finite-size Effects in a Two-Dimensional Electron Gas with Rashba Spin-Orbit Interaction
- Enhanced Spin Dependent Shot Noise in Magnetic Tunnel Barriers
- Current fluctuations in a spin filter with paramagnetic impurities
- Spin-Current Shot Noise in Mesoscopic Conductors
- Spin and Charge Shot Noise in Mesoscopic Spin Hall Systems
- Magnetic susceptibilities of diluted magnetic semiconductors and anomalous Hall-voltage noise
- Shot noise in diffusive ferromagnetic metals
- How spin-orbit interaction can cause electronic shot noise
- Quantum Transparency of Anderson Insulator Junctions: Statistics of Transmission Eigenvalues, Shot Noise, and Proximity Conductance
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