Half-metallic spin dynamics at a single<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>LaMnO</mml:mtext></mml:mrow><mml:mn>3</mml:mn></mml:msub><mml:mo>/</mml:mo><mml:msub><mml:mrow><mml:mtext>SrMnO</mml:mtext></mml:mrow><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>interface studied with nonlinear magneto-optical Kerr effect

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公開日
2009-12-10
権利情報
  • http://link.aps.org/licenses/aps-default-license
DOI
  • 10.1103/physrevb.80.241104
公開者
American Physical Society (APS)

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Electronic and magnetic dynamics at a single interface of antiferromagnetic manganites, ${\text{LaMnO}}_{3}/{\text{SrMnO}}_{3}$, were studied with time-resolved second-harmonic generation and time-resolved nonlinear magneto-optical Kerr effect. The temporal evolution of the respective signals shows clear differences; an optical pump makes an instantaneous response of the electrons and, in contrast, induces slow demagnetization, which points to a possibility of two-dimensional half-metallic ferromagnetism for this heterointerface. Detailed analysis with various pump and probe polarizations reveals possible pathways of the optical charge-transfer excitation between $\text{Mn}\text{ }d$ orbitals, leading to a subsequent perturbation to the interface spin system.

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  • Physical Review B

    Physical Review B 80 (24), 241104-, 2009-12-10

    American Physical Society (APS)

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