Bart van Wees (Groningen): Spin waves and magnons in two-dimensions: Emergent physics and new applications

Montag, 15. Januar 2024 13:30

Ort: Lise-Meitner-Hörsaal, Strudlhofgasse 4, 1090 Wien

Vortrag im Rahmen des University of Vienna Physics Colloquiums

Spintronics addresses the research on, and applications of, the transport, control and manipulation of the angular momentum of electrons, their "spin". Spin currents are usually carried by mobile electrons, in both magnetic and nonmagnetic metals and semiconductors. In contrast, spin waves (magnons) are propagating wave like excitations of the magnetic order in ferro and antiferromagnetic materials. In recent years these have been shown as very effective carriers of spin current and spin information, even in electrically insulating materials.

In this talk I will give an introduction of spintronics in two-dimensional Van der Waals materials (including graphene), their heterostructures and devices. I will then show that spin currents can also be carried by spin waves in two-dimensional ferromagnetic and antiferromagnetic materials, and explain how their different (anti) ferromagnetic properties are reflected in the magnon spectrum and magnon transport. I will conclude with an outlook of new devices and applications which will become possible by the combination of two-dimensional materials and their heterostructures with (spin wave) spintronics.

A light lunch buffet will be offered before the lecture at around 13:00.


Lise-Meitner-Hörsaal, Strudlhofgasse 4, 1. Stock

Bart van Wees (© Reyer Boxem)