Impact of Dresselhaus vs. Rashba spin-orbit coupling on the Holstein polaron

Abstract

We utilize an exact variational numerical procedure to calculate the ground state properties of a polaron in the presence of Rashba and linear Dresselhaus spin-orbit coupling. We find that when the linear Dresselhaus spin-orbit coupling approaches the Rashba spin-orbit coupling, the Van-Hove singularity in the density of states will be shifted away from the bottom of the band and finally disappear when the two spin-orbit couplings are tuned to be equal. The effective mass will be suppressed; the trend will become more significant for low phonon frequency. The presence of two dominant spin-orbit couplings will make it possible to tune the effective mass with more varied observables.

arXiv comment6 pages, low resolution figures

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Cited by in corpus (10)

• Curvatronics with bilayer graphene in an effective $4D$ spacetime
• Superconducting monolayer deposited on substrate: effects of the spin-orbit coupling induced by proximity effects
• Superconductivity in a two-dimensional superconductor with Rashba and Dresselhaus spin-orbit couplings
• Edge currents as a probe of the strongly spin-polarized topological noncentrosymmetric superconductors
• Enhancement of Superconducting $T_c$ due to the Spin-orbit Interaction
• Delocalisation of Majorana quasiparticles in plaquette--nanowire hybrid system
• Exact results relating spin-orbit interactions in two dimensional strongly correlated systems
• Itinerant surfaces with spin-orbit couplings, correlations and external magnetic fields: Exact results
• Enhanced Edelstein effect and interdimensional effects in an electron gas with Rashba spin-orbit coupling interface
• Vanishing of interband light absorption in a persistent spin helix state