Ultrafast Optically Induced Spin Transfer in Ferromagnetic Alloys

Overview

Journal Sci Adv

Specialties Biology
Science

Date 2020 Feb 4

PMID 32010774

Citations 16

Authors

M Hofherr

S Hauser

J K Dewhurst

P Tengdin

S Sakshath

H T Nembach

S T Weber

J M Shaw

T J Silva

H C Kapteyn

M Cinchetti

B Rethfeld

M M Murnane

D Steil

B Stadtmuller

S Sharma

M Aeschlimann

S Mathias

Affiliations

Soon will be listed here.

Abstract

The vision of using light to manipulate electronic and spin excitations in materials on their fundamental time and length scales requires new approaches in experiment and theory to observe and understand these excitations. The ultimate speed limit for all-optical manipulation requires control schemes for which the electronic or magnetic subsystems of the materials are coherently manipulated on the time scale of the laser excitation pulse. In our work, we provide experimental evidence of such a direct, ultrafast, and coherent spin transfer between two magnetic subsystems of an alloy of Fe and Ni. Our experimental findings are fully supported by time-dependent density functional theory simulations and, hence, suggest the possibility of coherently controlling spin dynamics on subfemtosecond time scales, i.e., the birth of the research area of attomagnetism.

Citing Articles

Ultrafast spin transfer and its impact on the electronic structure.

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Ultra-high spin emission from antiferromagnetic FeRh.

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Optical-Helicity-Dependent Orbital and Spin Dynamics in Two-Dimensional Ferromagnets.

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Ultrafast Chiral Precession of Spin and Orbital Angular Momentum Induced by Circularly Polarized Laser Pulse in Elementary Ferromagnets.

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Light-induced ultrafast spin transport in multilayer metallic films originates from - spin exchange coupling.

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