Narrow-band tunable terahertz emission from ferrimagnetic Mn3-xGa thin films

Awari, N.; Kovalev, S; Fowley, C; Rode, K.; Gallardo, R. A.; Lau, Y.-C.; Betto, D.; Thiyagarajah, N.; Green, B.; Yildirim, O.; Lindner, J; Fassbender, J.; Coey, J. M. D.; Deac, A M; Gensch, M.

doi:10.1063/1.4958855

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Narrow-band tunable terahertz emission from ferrimagnetic Mn3-xGa thin films

Author(s): N. Awari , S. Kovalev , C. Fowley , K. Rode , R. A. Gallardo , Y.-C. Lau , D. Betto , N. Thiyagarajah , B. Green , O. Yildirim , J. Lindner , J. Fassbender , J. M. D. Coey , A. M. Deac , M. Gensch

Publication date Created: July 18 2016

Publication date (Print): July 18 2016

Journal: Applied Physics Letters

Publisher: AIP Publishing

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Simple rules for the understanding of Heusler compounds

Tanja Graf, Claudia Felser, Stuart S.P. Parkin (2011)

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All-optical probe of coherent spin waves.

M Van Kampen, C Jozsa, J T Kohlhepp … (2002)

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.