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Transient quantum isolation and critical behavior in the magnetization dynamics of half-metallic manganites

Pincelli, T. ; Cucini, R. ; Verna, A. ; Borgatti, F. ; Oura, M. ; Tamasaku, K. ; Osawa, H. ; Lee, T.-L. ; Schlueter, C. ; Günther, S. ; Back, C. H. ; Dell’Angela, M. ; Ciprian, R. ; Orgiani, P. ; Petrov, A. ; Sirotti, F. ; Dediu, V. A. ; Bergenti, I. ; Graziosi, P. ; Miletto Granozio, F. ; Tanaka, Y. ; Taguchi, M. ; Daimon, H. ; Fujii, J. ; Rossi, G. ; Panaccione, G.



Abstract

We combine time-resolved pump-probe magneto-optical Kerr effect and photoelectron spectroscopy experiments supported by theoretical analysis to determine the relaxation dynamics of delocalized electrons in half-metallic ferromagnetic manganite La1-xSrxMnO3. We observe that the half-metallic character of La1-xSrxMnO3 determines the timescale of both the electronic phase transition and the ...

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