Exploring the Limits of Ultrafast Magnetism in van der Waals Magnets

#nanotechnology #Magnetics #spintronics

Speaker:   

Elton J. G. Santos

Affiliation:   

The University of Edinburgh

Title: 

 Exploring the Limits of Ultrafast Magnetism in van der Waals Magnets

Host: 

CD Phatak

Date/Time:     

Thursday, April 3, 2025

1:00 PM

Hybrid Zoom:

https://argonne.zoomgov.com/j/1600068366?pwd=Ed8Nw6Y2gw562kk07wpXTPTMV0uhJL.1#success

Abstract:

Long searched but only now discovered two-dimensional (2D) magnets are one of the selected group of materials that retain or impart strongly spin correlated properties at the limit of atomic layer thickness. In this presentation, I will discuss how different layered compounds (e.g., CrX₃ (X=F, Cl, Br, I), MnPS₃, Fe_5-xGeTe₂, Cr₂Ge₂Te₆) can provide new playgrounds for applications and fundamental exploration of spin correlations involving quantum-effects, topological spin-excitations and ultrafast laser pulses. In particular, I will show how van der Waals magnets do not require any magnetic anisotropy to stabilize 2D magnetism and demonstrate the null valid of the Mermin-Wagner theorem in practical applications. Moreover, some recent results of ultrafast laser excitations on different vdW heterostructures will be shown towards all-optical control of their magnetic properties with efficient heat management. 

• Date: 04 Apr 2025
• Time: 06:00 PM UTC to 07:00 PM UTC
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• United States 60439

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