Dynamical coupling and separation of multiple degrees of freedom in a photoexcited double-exchange system

Y. Kanamori, H. Matsueda, S. Ishihara

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

We present a theory of ultrafast photoinduced dynamics in a spin-charge coupled system, motivated by pump-probe experiments in perovskite manganites. A microscopic picture for multiple dynamics in spin and charge degrees is examined. Real-time simulations are carried out by two complimentary methods. Our calculation demonstrates that electron motion governs a short-time scale where charge and spin dynamics are combined strongly, while, in a long-time scale controlled by spin relaxation, the charge sector does not follow the remarkable change in the spin sector. The present results are in contrast to a conventional double-exchange picture in equilibrium states.

Original languageEnglish
Article number267401
JournalPhysical review letters
Volume103
Issue number26
DOIs
Publication statusPublished - 2009
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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