The Valence Band Structure of Gadolinium Studied with Time-Resolved Photoemission

Abstract

We have studied the response of the exchange split valence bands of ferromagnetic gadolinium tofemtosecond laser excitation. We observe a drop of the exchange splitting with a time constant of 0.9 ps but different response times of minority and majority spin bands. Furthermore, even above the Curie temperature there is a finite exchange splitting, which also decreases with laser excitation.KeywordsMagnetic Circular DichroismExchange SplittingValence Band StructureHeavy Lanthanide MetalHemispherical Energy AnalyzerThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.