Annuaire  |  Flux RSS  |  Espace presse  |  Wiki IJL  |  Webmail  |  Videos  |    Photos   Single-Calendar-Single  Single-Calendar-Single 
Mars 2015
Dim Lun Mar Mer Jeu Ven Sam
03 04
06 07
08 09 10 11
13 14
15 16
18 19 20 21
22 23
29 30 31  
Archives des actualités


Catégorie : Evénements scientifiques

Jeudi 9 avril 2015 : Séminaire de Giovanni Finocchio : "Skyrmion magnetic technology: from racetrack memory to oscillators and detectors"

L'équipe de l'Institut Jean Lamour en charge de la priorité scientifique"Matériaux Artificiels Nanostructurés", accueille Giovanni Finocchio (Messina University - Italie) pour un séminaire intitulé :


"Skyrmion magnetic technology: from racetrack memory to oscillators and detectors"


Date et lieu :

Jeudi 9 avril 2015 à 11h00 
Institut Jean Lamour
Faculté des Sciences et Technologies de Vandœuvre-lès-Nancy
Salle de séminaire (4eme étage)


Résumé :

Magnetic skyrmions are attracting a growing interest from both a fundamental and a technological point of view. A promising application concerns the racetrack memory, where skyrmions (moved by spin-transfer torque (STT) or spin-Hall effect (SHE)) can be used to carry the information bit, replacing domain walls [1,2,3]. Skyrmions are nucleated in out-of-plane materials, where the Dzyaloshinskii–Moriya interaction (DMI) arises: Bloch skyrmions are stabilized in the case of bulk DMI, whereas Néel skyrmions are obtained in the case interfacial DMI. Here, we’ll show that a skyrmion racetrack memory can be obtained in four scenarios, by combining the skyrmion type and the motion source [4]. In particular, the Néel skyrmion motion driven by the SHE (fig. 1a), exhibits a large velocity-current tunability, as well as a good robustness towards surface roughness and thermal fluctuations at room temperature. The last part of the seminary will show our recent advances in the design of skyrmion-based oscillators and microwave detectors.


Télécharger la présentation