Spin-signal propagation in time-dependent noncollinear spin transport

Abstract

Using a macroscopic analysis, we show that time-dependent noncollinear spin transport possesses a wavelike character. This leads to modifications of pure spin-diffusion dynamics and allows one to extract a finite spin-signal propagation velocity. We numerically study the dynamics of a pure spin current pumped into a nonmagnetic layer for precession frequencies ranging from GHz to THz.

7 pages, 4 figures

References in corpus (4)

• Semiconductor Spintronics
• Non-collinear Magnetoelectronics
• Signal propagation in time-dependent spin transport
• Electric readout of magnetization dynamics in a ferromagnet-semiconductor system

Cited by in corpus (5)

• Spintronic Sources of Ultrashort Terahertz Electromagnetic Pulses
• Particle-in-cell simulation of ultrafast hot-carrier transport in Fe/Au-heterostructures
• Charge pumping by magnetization dynamics in magnetic and semi-magnetic tunnel junctions with interfacial Rashba or bulk extrinsic spin-orbit couplings
• Impact of gigahertz and terahertz transport regimes on spin propagation and conversion in the antiferromagnet IrMn
• Optical detection of spin transport in non-magnetic metals