All-optical probe of coherent spin waves

M. Kampen, van; C. Józsa; J.T. Kohlhepp; P.R. LeClair; L. Lagae; W.J.M. Jonge, de; B. Koopmans

doi:10.1103/PhysRevLett.88.227201

All-optical probe of coherent spin waves

M. Kampen, van, C. Józsa, J.T. Kohlhepp, P.R. LeClair, L. Lagae, W.J.M. Jonge, de, B. Koopmans

Physics of Nanostructures

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

A novel, all-optical method to excite and detect spin waves in magnetic materials is presented. By exploiting the temperature dependence of the magnetic anisotropy, an ultrashort laser pulse is efficiently converted in a picosecond "anisotropy field" pulse that triggers a coherent precession of the magnetization. Recording the temporal evolution of the precessing spins by a time-delayed probe-pulse provides a quantitative method to study locally the magnetic anisotropy, as well as switching and damping phenomena in micromagnetic structures. Applications to nickel and permalloy ( Ni80Fe20) films are discussed, particularly showing the possibility to explore standing spin waves in thin films.

Original language	English
Article number	227201
Pages (from-to)	227201-1/4
Number of pages	4
Journal	Physical Review Letters
Volume	88
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.88.227201
Publication status	Published - 2002

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title = "All-optical probe of coherent spin waves",

abstract = "A novel, all-optical method to excite and detect spin waves in magnetic materials is presented. By exploiting the temperature dependence of the magnetic anisotropy, an ultrashort laser pulse is efficiently converted in a picosecond {"}anisotropy field{"} pulse that triggers a coherent precession of the magnetization. Recording the temporal evolution of the precessing spins by a time-delayed probe-pulse provides a quantitative method to study locally the magnetic anisotropy, as well as switching and damping phenomena in micromagnetic structures. Applications to nickel and permalloy ( Ni80Fe20) films are discussed, particularly showing the possibility to explore standing spin waves in thin films.",

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year = "2002",

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AU - Kampen, van, M.

AU - Józsa, C.

AU - Kohlhepp, J.T.

AU - LeClair, P.R.

AU - Lagae, L.

AU - Jonge, de, W.J.M.

AU - Koopmans, B.

PY - 2002

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N2 - A novel, all-optical method to excite and detect spin waves in magnetic materials is presented. By exploiting the temperature dependence of the magnetic anisotropy, an ultrashort laser pulse is efficiently converted in a picosecond "anisotropy field" pulse that triggers a coherent precession of the magnetization. Recording the temporal evolution of the precessing spins by a time-delayed probe-pulse provides a quantitative method to study locally the magnetic anisotropy, as well as switching and damping phenomena in micromagnetic structures. Applications to nickel and permalloy ( Ni80Fe20) films are discussed, particularly showing the possibility to explore standing spin waves in thin films.

AB - A novel, all-optical method to excite and detect spin waves in magnetic materials is presented. By exploiting the temperature dependence of the magnetic anisotropy, an ultrashort laser pulse is efficiently converted in a picosecond "anisotropy field" pulse that triggers a coherent precession of the magnetization. Recording the temporal evolution of the precessing spins by a time-delayed probe-pulse provides a quantitative method to study locally the magnetic anisotropy, as well as switching and damping phenomena in micromagnetic structures. Applications to nickel and permalloy ( Ni80Fe20) films are discussed, particularly showing the possibility to explore standing spin waves in thin films.

U2 - 10.1103/PhysRevLett.88.227201

DO - 10.1103/PhysRevLett.88.227201

M3 - Article

VL - 88

SP - 227201-1/4

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

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