Femtosecond spin dynamics of epitaxial Cu (111)/Ni/Cu wedges

B. Koopmans; M. Kampen, van; J.T. Kohlhepp; W.J.M. Jonge, de

doi:10.1063/1.373251

Femtosecond spin dynamics of epitaxial Cu (111)/Ni/Cu wedges

B. Koopmans, M. Kampen, van, J.T. Kohlhepp, W.J.M. Jonge, de

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Abstract

The femtosecond spin dynamics in ferromagnetic metals is studied using time-resolved magneto-optics on an epitaxial Cu(111)/Ni/Cu wedge. A novel and sensitive double modulation scheme is introduced. The induced Kerr rotation and ellipticity are separately measured, and display a contrasting behavior during the first 500 fs after excitation. This proves the absence of a direct relation between the magneto-optical signal and the magnetization. A systematic study of the spin dynamics along the nickel wedge shows a surprisingly small influence of interface scattering, magnetic anisotropy, and morphology on the dynamics.

Original language	English
Pages (from-to)	5070-5072
Journal	Journal of Applied Physics
Volume	87
Issue number	9
DOIs	https://doi.org/10.1063/1.373251
Publication status	Published - 2000

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title = "Femtosecond spin dynamics of epitaxial Cu (111)/Ni/Cu wedges",

abstract = "The femtosecond spin dynamics in ferromagnetic metals is studied using time-resolved magneto-optics on an epitaxial Cu(111)/Ni/Cu wedge. A novel and sensitive double modulation scheme is introduced. The induced Kerr rotation and ellipticity are separately measured, and display a contrasting behavior during the first 500 fs after excitation. This proves the absence of a direct relation between the magneto-optical signal and the magnetization. A systematic study of the spin dynamics along the nickel wedge shows a surprisingly small influence of interface scattering, magnetic anisotropy, and morphology on the dynamics.",

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PY - 2000

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AB - The femtosecond spin dynamics in ferromagnetic metals is studied using time-resolved magneto-optics on an epitaxial Cu(111)/Ni/Cu wedge. A novel and sensitive double modulation scheme is introduced. The induced Kerr rotation and ellipticity are separately measured, and display a contrasting behavior during the first 500 fs after excitation. This proves the absence of a direct relation between the magneto-optical signal and the magnetization. A systematic study of the spin dynamics along the nickel wedge shows a surprisingly small influence of interface scattering, magnetic anisotropy, and morphology on the dynamics.

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DO - 10.1063/1.373251

M3 - Article

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SP - 5070

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JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 9

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Femtosecond spin dynamics of epitaxial Cu (111)/Ni/Cu wedges

Abstract

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