Formation of Random Dark Envelope Solitons from Incoherent Waves

Details Formation of Random Dark Envelope Solitons from Incoherent Waves Formation of Random Dark Envelope Solitons from Incoherent Waves

2009-12-09

arxiv.org/abs/0912.1833v1

Rev. Lett., v. 104, p. 037207 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 4 figures, double-spaced preprint format

Scientific paper

10.1103/PhysRevLett.104.037207

This letter reports experimental results on a new type of soliton: the random temporal dark soliton. One excites an incoherent large-amplitude propagating spin-wave packet in a ferromagnetic film strip with a repulsive, instantaneous nonlinearity. One then observes the random formation of dark solitons from this wave packet. The solitons appear randomly in time and in position relative to the entire wave packet. They can be gray or black. For wide and/or very strong spin-wave packets, one also observes multiple dark solitons. In spite of the randomness of the initial wave packets and the random formation processes, the solitons show signatures that are found for conventional coherent dark solitons.

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