Journal Articles Physical Review B Year : 2022

Spin-orbit coupling induced ultrahigh-harmonic generation from magnetic dynamics

Abstract

The generation of nonlinear high-frequency response in solids from powerful optical pumps has gained momentum over the past decade. High-harmonic generation in solids can be obtained from strong-field laser excitation, usually restricted to optical frequencies and limited both in amplitude and in harmonic order. Here, we demonstrate that high-harmonic emission can be achieved by exploiting conventional spin pumping, without the need for optical excitation. Considering a noncentrosymmetric (ferro-or antiferro-)magnet, we show that when the spin-orbit coupling strength is close to the s-d exchange energy, a strongly nonlinear regime resulting from resonant spin flip scattering occurs leading to the generation of a large number of harmonics at realistic precession frequencies, thereby enhancing both spin and charge dynamics by orders of magnitude. This mechanism could be used to trigger high-frequency emission deep in the THz regime.
Fichier principal
Vignette du fichier
hhg2022.pdf (1) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-03830504 , version 1 (26-10-2022)

Identifiers

Cite

Ousmane Ly, Aurelien Manchon. Spin-orbit coupling induced ultrahigh-harmonic generation from magnetic dynamics. Physical Review B, 2022, 105 (18), pp.L180415. ⟨10.1103/PhysRevB.105.L180415⟩. ⟨hal-03830504⟩
44 View
52 Download

Altmetric

Share

More