Strain-enhanced spin-orbit coupling in permalloy thin films - PEPR Electronique Accéder directement au contenu
Article Dans Une Revue Physical Review B Année : 2024

Strain-enhanced spin-orbit coupling in permalloy thin films

Résumé

A comprehensive analysis of the impact of strain on spin-orbit coupling (SOC) in permalloy (Py, N⁢i80⁢F⁢e20) thin films is presented. Utilizing a combination of ferromagnetic resonance (FMR) and x-ray magnetic circular dichroism (XMCD) techniques, we systematically evaluate the modifications in SOC as a function of applied strain. Our FMR data indicate a marked enhancement in Gilbert damping and an increase in the perpendicular magnetic anisotropy constant, suggesting that SOC strength intensifies with both compressive and tensile strains. XMCD results, in concert with first-principles calculations, elucidate the underlying mechanism: strain-induced lattice distortions substantially elevate the orbital moments within the Py films. This boost in the orbital moment is attributed to the strain's modulation of the orbital quenching effect, revealing a direct correlation between lattice strain and SOC enhancement. These insights not only deepen our understanding of SOC in ferromagnetic thin films but also have potential implications for the design of spintronic devices where controlling SOC is paramount.
Fichier principal
Vignette du fichier
Sicong Hu_2024_PhysRevB.109.224407.pdf (2.61 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04665742 , version 1 (31-07-2024)

Identifiants

Citer

Sicong Hu, Er Liu, Yuqing Bai, Mingzhe Zhuang, Wenwen Liu, et al.. Strain-enhanced spin-orbit coupling in permalloy thin films. Physical Review B, 2024, 109 (22), pp.224407. ⟨10.1103/PhysRevB.109.224407⟩. ⟨hal-04665742⟩
21 Consultations
6 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More