Half-metallic spin dynamics at a single LaMnO3 / SrMnO3 interface studied with nonlinear magneto-optical Kerr effect

Naoki Ogawa, Takuya Satoh, Yasushi Ogimoto, Kenjiro Miyano

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Electronic and magnetic dynamics at a single interface of antiferromagnetic manganites, LaMnO3 / SrMnO3, 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 Mnd orbitals, leading to a subsequent perturbation to the interface spin system.

Original languageEnglish
Article number241104
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume80
Issue number24
DOIs
Publication statusPublished - Dec 10 2009

Fingerprint

Optical Kerr effect
Spin dynamics
spin dynamics
Kerr effects
Pumps
pumps
Manganites
Demagnetization
Ferromagnetism
demagnetization
Harmonic generation
ferromagnetism
Charge transfer
harmonic generations
charge transfer
Polarization
orbitals
perturbation
Electrons
probes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Half-metallic spin dynamics at a single LaMnO3 / SrMnO3 interface studied with nonlinear magneto-optical Kerr effect. / Ogawa, Naoki; Satoh, Takuya; Ogimoto, Yasushi; Miyano, Kenjiro.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 80, No. 24, 241104, 10.12.2009.

Research output: Contribution to journalArticle

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