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- W3100846056 abstract "Coherent excitation of magnons is conventionally achieved through Raman scattering processes, in which the difference-frequency components of the driving field are resonant with the magnon energy. Here, we describe mechanisms by which the sum-frequency components of the driving field can be used to coherently excite magnons through two-particle absorption processes. We use the Landau-Lifshitz-Gilbert formalism to compare the spin-precession amplitudes that different types of impulsive stimulated and ionic Raman scattering processes and their sum-frequency counterparts induce in an antiferromagnetic model system. We show that sum-frequency mechanisms enabled by linearly polarized driving fields yield excitation efficiencies comparable or larger than established Raman techniques, while elliptical polarizations produce only weak and circularly polarizations no sum-frequency components at all. The mechanisms presented here complete the map for dynamical spin control by the means of Raman-type processes." @default.
- W3100846056 created "2020-11-23" @default.
- W3100846056 creator A5052444525 @default.
- W3100846056 creator A5077220751 @default.
- W3100846056 creator A5080023418 @default.
- W3100846056 date "2021-03-04" @default.
- W3100846056 modified "2023-10-13" @default.
- W3100846056 title "Sum-frequency excitation of coherent magnons" @default.
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- W3100846056 doi "https://doi.org/10.1103/physrevb.103.094407" @default.
- W3100846056 hasPublicationYear "2021" @default.
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