Exploring the Limits of Ultrafast Magnetism in van der Waals Magnets

#nanotechnology #Magnetics #spintronics

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.