Polaron formation in the presence of Rashba spin-orbit coupling: implications for spintronics
arXiv:0902.3853 · doi:10.1103/PhysRevLett.102.186403
Abstract
We study the effects of the Rashba spin-orbit coupling on the polaron formation, using a suitable generalization of the Momentum Average approximation. Contrary to previous investigations of this problem, we find that the spin-orbit interaction decreases the effective electron-phonon coupling. It is thus possible to lower the effective mass of the polaron by increasing the spin-orbit coupling. We also show that when the spin-orbit coupling is large as compared to the phonon energy, the polaron retains only one of the spin polarized bands in its coherent spectrum. This has major implications for the propagation of spin-polarized currents in such materials, and thus for spintronic applications.
4 pages, 3 figures
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- Impact of Dresselhaus vs. Rashba spin-orbit coupling on the Holstein polaron
- Spin-orbital Jahn-Teller bipolarons
- Polaronic Conductivity in CrGeTe Single Crystals
- Large polaron formation induced by Rashba spin-orbit coupling
- Impact of spin-orbit coupling on the Holstein polaron
- Beyond the single-site approximation modeling of electron-phonon coupling effects on resonant inelastic X-ray scattering spectra
- Coupled spin and electron-phonon dynamics at the relativistic Tl/Si(111) surface
- Holstein polarons, Rashba-like spin splitting and Ising superconductivity in electron-doped MoSe2
- Orbital Effects of Strong Magnetic Field on a 2-D Holstein Polaron
- An oscillating Casimir potential between two impurities in a spin-orbit coupled Bose-Einstein condensate
- Holstein magneto-polarons: from Landau levels to Hofstadter butterflies
- Extending the Feynman variational principle and analytical methods to lattice polarons