Electrical control of spin dynamics in finite one-dimensional systems

Abstract

We investigate the possibility of the electrical control of spin transfer in monoatomic chains incorporating spin-impurities. Our theoretical framework is the mixed quantum-classical (Ehrenfest) description of the spin dynamics, in the spirit of the s-d-model, where the itinerant electrons are described by a tight-binding model while localized spins are treated classically. Our main focus is on the dynamical exchange interaction between two well-separated spins. This can be quantified by the transfer of excitations in the form of transverse spin oscillations. We systematically study the effect of an electrostatic gate bias V_g on the interconnecting channel and we map out the long-range dynamical spin transfer as a function of V_g. We identify regions of V_g giving rise to significant amplification of the spin transmission at low frequencies and relate this to the electronic structure of the channel.

9 pages, 11 figures

References in corpus (8)

• Enhanced Gilbert Damping in Thin Ferromagnetic Films
• Chip-scale nanofabrication of single spins and spin arrays in diamond
• Spin currents and spin dynamics in time-dependent density-functional theory
• Simple model for scanning tunneling spectroscopy of noble metal surfaces with adsorbed Kondo impurities
• Spin-flip inelastic electron tunneling spectroscopy in atomic chains
• On the Newtonian origin of the spin motive force in ferromagnetic atomic wires
• Graphene-based spin-pumping transistor
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Cited by in corpus (4)

• Long-time relaxation dynamics of a spin coupled to a Chern insulator
• Bias asymmetry in the conductance profile of magnetic ions on surfaces probed by scanning tunneling microscopy
• Spin dynamics of Mn impurities and their bound acceptors in GaAs
• Phonon and magnon jets above the critical current in nanowires with planar domain walls