Invited talk: Christopher Marrows

We are pleased to announce the invited talk given by Christopher Marrows, Professor of Condensed Matter Physics at the University of Leeds, UK, entitled “Skyrmions in chiral magnetic multilayers”.
Magnetic skyrmions are topologically-nontrivial spin textures with particle-like properties. Their size, topological stability, and mobility suggest their use in future generations of spintronic devices, the prototype of which is the skyrmion racetrack. To realise a racetrack requires three basic operations: the nucleation (writing), propagation (manipulation), and detection (reading) of a skyrmion, all by electrical means. Here we show that all three are experimental feasible at room temperature in Pt/Co/Ir or Pt/CoB/Ir multilayers in which the different heavy metals above and below the magnetic layer break inversion symmetry and induce chirality by means of the Dzyaloshinskii-Moriya interaction, defining the structure of Néel skyrmion spin textures. We show deterministic nucleation on nanosecond timescales using an electrical point contact on top of the multilayer, current-driven propagation along a wire in which the skyrmions are channelled by defects in the multilayer, and their detection by means of the Hall effect that reveals an unexpectedly large contribution to the Hall signal that correlates with the topological winding number.
The talk will be on November 4th at 11:00.
The event is free and open for everybody, it will be online via TEAMS with the following link:
https://teams.microsoft.com/l/meetup-join/19%3ameeting_ODE4MjNmOWItODQxMi00ZGZkLTkzNzAtNmNkMjFkY2RlOWE1%40thread.v2/0?context=%7b%22Tid%22%3a%222f54ab68-83af-4d70-8895-a0d1e95ec899%22%2c%22Oid%22%3a%227778b4e1-e06d-485b-b530-cf013d4e9498%22%2c%22IsBroadcastMeeting%22%3atrue%7d&btype=a&role=a
Do not miss it!

Related news
Exitoso simposio conjunto con el Instituto Biofisika
El 19 de junio celebramos el simposio ‘Processes and Materials for Life’, organizado conjuntamente con el Instituto Biofisika. El objetivo del simposio fue compartir el conocimiento común de ambos...‘Materials for Society’. Charla/coloquio con Jorge García del Arco
El próximo 18 de junio, a partir de las 11:00 en el auditorio Martina Casiano de Leioa, BCMaterials abre un nuevo capítulo de ‘Materials for Society’, una iniciativa que relaciona la ciencia con el...Entrevista a Maibelin Rosales en ‘STEMlab podcast’
Nuestra investigadora post-doctoral Marie Curie Maibelin Rosales es una de las protagonistas de la serie ‘STEMlab podcast’, promovida por BizkaiaTech, de la Diputación Foral de Bizkaia. El objetivo...Visita del Comité Asesor Local de BCMaterials
El pasado 3 de junio recibimos la visita de miembros del Comité Asesor Local de BCMaterials, uno de los órganos consultivos de nuestro centro en materia científica. El objetivo de la reunión era que...