Externally controlled high degree of spin polarization and spin inversion in a conducting junction: Two new approaches
arXiv:1809.06544 · doi:10.1038/s41598-017-14499-2
Abstract
We propose two new approaches for regulating spin polarization and spin inversion in a conducting junction within a tight-binding framework based on wave-guide theory. The system comprises a magnetic quantum ring with finite modulation in site potential is coupled to two non-magnetic electrodes. Due to close proximity an additional tunneling is established between the electrodes which regulates electronic transmission significantly. At the same time the phase associated with site potential, which can be tuned externally yields controlled transmission probabilities. Our results are valid for a wide range of parameter values which demonstrates the robustness of our proposition. We strongly believe that the proposed model can be realized in the laboratory.
arXiv comment15 pages, 12 figures
References in corpus (27)
- Spintronics: Fundamentals and applications
- Electronic spin transport and spin precession in single graphene layers at room temperature
- Electric Field Control of Spin Transport
- Optical ferris wheel for ultracold atoms
- Topological Zero-Energy Modes in Gapless Commensurate Aubry-André-Harper Models
- Measurement of Rashba and Dresselhaus spin-orbit magnetic fields
- Experimental Realization of a Quantum Spin Pump
- Quantum many particle systems in ring-shaped optical lattices
- Electric-field controlled spin reversal in a quantum dot with ferromagnetic contacts
- An Adiabatic Quantum Pump of Spin Polarized Current
- Toroidal optical dipole traps for atomic Bose-Einstein condensates using Laguerre-Gaussian beams
- Quantum rings as electron spin beam splitters
- Pure spin currents and associated electrical voltage
- Spin separation in cyclotron motion
- T-shaped spin filter with a ring resonator
- Gate-controllable spin-battery
- Magnetic Fields Effects on the Electronic Conduction Properties of Molecular Ring Structures
- Quantum splitter controlled by Rashba spin-orbit interaction
- Constructing Spin Interference Devices from Nanometric Rings
- Effective dynamics of cold atoms flowing in two ring shaped optical potentials with tunable tunneling
- Electron transport in a double quantum ring: Evidence of an AND gate
- Spin-dependent quantum transport in periodic magnetic modulations: Aharonov-Bohm ring structure as a spin filter
- Magnetic Quantum Wire as a Spin Filter: An Exact Study
- Curvature effect on spin polarization in a three-terminal geometry in presence of Rashba spin-orbit interaction
- Phase controlled metal-insulator transition in multi-leg quasiperiodic optical lattices
- Spin Filtering in a Nonuniform Quantum Wire with Rashba Spin-Orbit Interaction
- Externally controlled selective spin transfer through a two-terminal bridge setup
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