Exploring the Limits of Ultrafast Magnetism in van der Waals Magnets

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, Fe5-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.
Co-sponsored by: IEEE Chicago, IEEE NTC Young Professionals
9700 S Cass Ave, Argonne National Laboratory, LEMONT, Illinois, United States, 60439, Virtual: https://events.vtools.ieee.org/m/479576