Dynamic Kerr Effect and Spectral Weight Transfer in the Manganites

Details Dynamic Kerr Effect and Spectral Weight Transfer in the Manganites Dynamic Kerr Effect and Spectral Weight Transfer in the Manganites

2003-11-19

arxiv.org/abs/cond-mat/0311452v2

Physics

Condensed Matter

Strongly Correlated Electrons

12 text pages, 4 figures

Scientific paper

10.1103/PhysRevLett.93.047402

We perform pump-probe Kerr spectroscopy in the colossally magnetoresistive manganite Pr0.67Ca0.33MnO3. Kerr effects uncover surface magnetic dynamics undetected by established methods based on reflectivity and optical spectral weight transfer. Our findings indicate the connection between spin and charge dynamics in the manganites may be weaker than previously thought. Additionally, important differences between this system and conventional ferromagnetic metals manifest as long-lived, magneto-optical coupling transients, which may be generic to all manganites.

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