Laser-induced ultrafast spin current pulses

A thermodynamic approach

Journal article (2017)

Authors

A.W. Fognini QN/Zwiller Lab , Kavli institute of nanoscience Delft
T. U. Michlmayr ETH Zürich
A. Vaterlaus ETH Zürich
Y. Acremann ETH Zürich
Research Group
QN/Zwiller Lab
Copyright: © 2017 A.W. Fognini, T. U. Michlmayr, A. Vaterlaus, Y. Acremann
DOI: https://doi.org/10.1088/1361-648X/aa6a76
More Info
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Published Date

2017

Language

English

Research Group

QN/Zwiller Lab

Abstract

The ultrafast demagnetization process allows for the generation of femtosecond spin current pulses. Here, we present a thermodynamic model of the spin current generation process, based on the chemical potential gradients as the driving force for the spin current. We demonstrate that the laser-induced spin current can be estimated by an easy to understand diffusion model.