Spin dynamics of the antiferromagnetic-to-ferromagnetic phase transition in FeRh on a sub-picosecond time scale
2004; American Institute of Physics; Volume: 85; Issue: 14 Linguagem: Inglês
10.1063/1.1799244
ISSN1520-8842
AutoresJan-Ulrich Thiele, M. Buess, C. H. Back,
Tópico(s)Magnetic Properties and Applications
ResumoThe antiferromagnetic-to-ferromagnetic phase transition in FeRh films induced by heating with a femtosecond laser pulse was investigated using the time-resolved magneto-optical Kerr effect. An initial rise time of the magneto-optical signal of about 500fs is found as the FeRh is heated through the transition. The data offer a complementary view to previous pump–probe experiments on “simple” ferromagnetic materials and allow a glimpse at the complex interplay between lattice, electron and spin dynamics governing the first-order antiferromagnetic-to-ferromagnetic phase transition of FeRh.
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