Optical manipulation of magnetism in spin-charge coupled correlated electron system

Details Optical manipulation of magnetism in spin-charge coupled correlated electron system Optical manipulation of magnetism in spin-charge coupled correlated electron system

2012-04-09

arxiv.org/abs/1204.1844v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures

Scientific paper

Photoirradiation effects in correlated electrons coupled with localized spins are studied based on the extended double-exchange model. In particular, we examine melting of an antiferromagnetic (AFM) charge order insulating state by varying the light intensity. When intense light is irradiated, the AFM insulating characteristics are strengthened, rather than change into the ferromagnetic metallic characteristic, which are expected from the conventional double exchange interaction when carriers are introduced by weak light irradiation or chemical doping. This provides a new principle for optically manipulating magnetism.

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