Creation of magnetic skyrmion bubble lattices by ultrafast laser in ultrathin films - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Nano Letters Année : 2018

Creation of magnetic skyrmion bubble lattices by ultrafast laser in ultrathin films

Juan-Carlos Rojas-Sanchez
Michel Hehn
Grégory Malinowski
Gilles Gaudin
Stéphane Mangin
Hélène Béa

Résumé

Magnetic skyrmions are topologically nontrivial spin textures which hold great promise as stable information carriers in spintronic devices at the nanoscale. One of the major challenges for developing novel skyrmionbased memory and logic devices is fast and controlled creation of magnetic skyrmions at ambient conditions. Here we demonstrate controlled generation of skyrmion bubbles and skyrmion bubble lattices from a ferromagnetic state in sputtered ultrathin magnetic films at room temperature by a single ultrafast (35 fs) laser pulse. The skyrmion bubble density increases with the laser fluence, and it finally becomes saturated, forming disordered hexagonal lattices. Moreover, we present that the skyrmion bubble lattice configuration leads to enhanced topological stability as compared to isolated skyrmions, suggesting its promising use in data storage. Our findings shed light on the optical approach to the skyrmion bubble lattice in commonly accessible materials, paving the road toward the emerging skyrmion-based memory and synaptic devices.
Fichier principal
Vignette du fichier
Je et al. - 2018 - Creation of Magnetic Skyrmion Bubble Lattices by Ultrafast Laser in Ultrathin Films.pdf (7.39 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-01903085 , version 1 (04-01-2023)

Identifiants

Citer

Soong-Geun Je, Pierre Vallobra, Titiksha Srivastava, Juan-Carlos Rojas-Sanchez, Thai Ha Pham, et al.. Creation of magnetic skyrmion bubble lattices by ultrafast laser in ultrathin films. Nano Letters, 2018, 18 (11), pp.7362-7371. ⟨10.1021/acs.nanolett.8b03653⟩. ⟨hal-01903085⟩
150 Consultations
75 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More