Abstract
Optical manipulation of the magnetic anisotropy is demonstrated for bilayered manganites, , by means of femtosecond Kerr-rotation measurements. Upon the photoexcitation on the crystal, the magnetization exhibits the precessional motion for about 1 ns, revealing the directional change of the magnetocrystalline anisotropy from the axis to the plane. This change of the anisotropy induces the nonthermal decrease of the -axis magnetization component for about 1 ns.
- Received 25 February 2006
DOI:https://doi.org/10.1103/PhysRevLett.98.017402
©2007 American Physical Society