New attraction for heat harvesting devices exploiting magnetism - Dan Mannix, ESS & Institut Néel -

INVITATION

#ESRFscience Live Online Seminars
 

"New attraction for heat harvesting devices exploiting magnetism"

Friday, February 19th at 14:00

Presented by Dan Mannix

European Spallation Source (Lund) and Institut Néel (Grenoble)

ABSTRACT

Spin caloritronics refer to a class of materials in which spin, charge and heat currents can be interconverted and provide a diverse multifunctionality for the development of future spintronic devices. A prominent phenomenon is the so-called Spin Seebeck Effect (SSE), in which thermoelectricity is generated using magnetic materials and exploited in waste energy recycling components. The SSE is proposed to arise from a magnon induced spin current at the interface of a magnetic insulator and heavy metal. Therefore, revealing the nanoscale interplay of atomic and magnetic structure, together with the magnon properties, is a vital step in understanding spin caloritronic materials and optimising their functionality in future devices.

In this webinar, the development of a novel probe combining X-ray Resonant Magnetic Scattering and nanobeams to reveal a nanoscale spin texture in prototype SSE device structures will be presented [1]. In addition, we illustrate the potential for circular dichroic RIXS to provide insight into the role of chirality of magnon modes driving the SSE. Future exciting opportunities offered by EBS of ESRF-II for spin caloritronic materials by high resolution magnetic Bragg ptychography developments, will also be discussed. 

[1] Science Advances  02 Oct 2020: Vol. 6, no. 40, eaba9351
DOI: 10.1126/sciadv.aba9351

Please click here to connect to watch the webinar in replay:
https://www.youtube.com/watch?v=IHc3OqJHOkU