Timescale of optical magnetization switching in MnBi2Te4

Determine the characteristic timescale of magnetization switching induced by optical excitation in the magnetic topological insulator MnBi2Te4 using time-resolved techniques capable of resolving femtosecond-to-nanosecond dynamics.

Background

MnBi2Te4 is a magnetic topological insulator where optical control of magnetization has been demonstrated, making it a promising platform for ultrafast magneto-photonic applications.

Knowing the switching timescale is pivotal for both fundamental understanding of optically driven spin dynamics in topological magnets and for assessing feasibility in ultrafast devices.