Quantum dissipative Rashba spin ratchets
arXiv:0803.3526 · doi:10.1103/PhysRevLett.100.230601
Abstract
We predict the possibility to generate a finite stationary spin current by applying an unbiased ac driving to a quasi-one-dimensional asymmetric periodic structure with Rashba spin-orbit interaction and strong dissipation. We show that under a finite coupling strength between the orbital degrees of freedom the electron dynamics at low temperatures exhibits a pure spin ratchet behavior, {\it i.e.} a finite spin current and the absence of charge transport in spatially asymmetric structures. It is also found that the equilibrium spin currents are not destroyed by the presence of strong dissipation.
4 pages, 3 figures, physical explanation of the results was added, role of the spin torque is now mentioned, Fig. 2 was changed: only the non-equilibrium spin current (the full spin current was removed) is now shown but for different dissipation intensity
References in corpus (11)
- Universal Intrinsic Spin-Hall Effect
- Dissipationless Quantum Spin Current at Room Temperature
- Direct electronic measurement of the spin Hall effect
- Experimental observation of the spin-Hall effect in a two dimensional spin-orbit coupled semiconductor system
- On A Proper Definition of Spin Current
- Mechanical measurement of equilibrium spin currents in the Rashba medium
- Rashba quantum wire: exact solution and ballistic transport
- Multi-band quantum ratchets
- Deduction of Pure Spin Current from Spin Linear and Circular Photogalvanic Effect in Semiconductor Quantum Wells
- Coherent spin ratchets: A spin-orbit based quantum ratchet mechanism for spin-polarized currents in ballistic conductors
- Bloch's theory in periodic structures with Rashba's spin-orbit interaction
Cited by in corpus (20)
- Artificial Brownian motors: Controlling transport on the nanoscale
- Quantum transport in Rashba spin-orbit materials: A review
- Experimental Spin Ratchet
- Proposal for an on-demand source of polarized electrons into the edges of a topological insulator
- Quantum-classical transition and quantum activation of ratchet currents in the parameter space
- Dirac-Weyl electrons in a periodic spin-orbit potential
- Nonlinear Floquet dynamics of spinor condensates in an optical cavity: Cavity-amplified parametric resonance
- Underdamped quantum ratchets
- Directed current in the Holstein system
- Interplay between quantum dissipation and an in-plane magnetic field in the spin ratchet effect
- Magnetic quantum ratchet effect in Si-MOSFETs
- Anomalous Cherenkov spin-orbit sound
- Charge ratchet from spin flip: space-time symmetry paradox
- High temperature conductance of a two-dimensional superlattice controlled by spin-orbit interaction
- Spin-orbit interaction controlled properties of two-dimensional superlattices: Spintronic crystals
- Terahertz spin ratchet effect in magnetic metamaterials
- Spin-Orbit Based Coherent Spin Ratchets
- Asymmetric Cherenkov acoustic reverse in topological insulators
- Resonant tunneling-based spin ratchets
- Amplification of quantum transfer and quantum ratchet