Signal propagation in time-dependent spin transport

Abstract

This paper analyzes theoretically the signal propagation in spin transport by modulating the current passing through magnetic multilayers. Using a macroscopic description of spin transport based on the dynamical Boltzmann equation, we show that time-dependent spin transport possesses a wave-like character that leads to modifications of pure spin-diffusion dynamics. In particular, the wave-like characteristics allow one to extract a finite spin signal-propagation velocity.

10 pages, 10 figures, corrected typos (including numerical values)

References in corpus (4)

• Spintronics: Fundamentals and applications
• Semiconductor Spintronics
• Complex impedance of a spin injecting junction
• Electric readout of magnetization dynamics in a ferromagnet-semiconductor system

Cited by in corpus (8)

• Femtosecond formation dynamics of the spin Seebeck effect revealed by terahertz spectroscopy
• Spin transport theory in ferromagnet/semiconductor systems with non-collinear magnetization configurations
• Experimental Evidence of Non-Negligible Imaginary Part of Spin Mixing Conductance and Its Impact on Magnetization Dynamics in Heavy-Metal|Ferromagnet Bilayers
• Accessing ultrafast spin-transport dynamics in copper using broadband terahertz spectroscopy
• Spin-signal propagation in time-dependent noncollinear spin transport
• Spin-accumulation capacitance and its application to magnetoimpedance
• Spin-polarized currents driven by spin-dependent surface screening
• Nonresonant amplification of coherent spin waves through voltage-induced interface magnetoelectric effect and spin-transfer torque