Route toward high-speed nano-magnonics

TL;DR

This paper demonstrates a method to generate short, high-speed spin-wave packets in nanoscale magnetic waveguides using pure spin current pulses, advancing the development of high-speed magnonic information systems.

Contribution

It introduces a novel experimental approach utilizing nonlocal spin injection to produce nanosecond spin-wave packets for high-speed magnonic applications.

Findings

Spin current pulses generate nanosecond spin-wave packets.

Efficient excitation of short spin waves in nanoscale waveguides.

Potential for high-speed nanoscale magnonic information processing.

Abstract

We study experimentally the possibility to utilize pulses of pure spin current, produced via the nonlocal spin injection mechanism, to generate short packets of spin waves propagating in nanoscale magnetic waveguides. The spatially and time-resolved micro-focus Brillouin light scattering spectroscopy measurements demonstrate that the excitation by spin current results in extremely fast transient response, enabling efficient generation of short spin-wave packets with duration down to a few nanoseconds. The proposed method opens a route for the implementation of high-speed magnonic systems for transmission and processing of information on the nanoscale.