Spin-wave population in nickel after femtosecond laser pulse excitation

Benjamin Lenk, Gerrit Eilers, Jaroslav Hamrle, and Markus Münzenberg
Phys. Rev. B 82, 134443 – Published 27 October 2010
PDFHTMLExport Citation

Abstract

The spin-wave relaxation mechanisms after intense laser excitation in ferromagnetic nickel films are investigated with all-optical pump-probe experiments. Uniform precession (Kittel mode), Damon-Eshbach surface modes and perpendicular standing spin waves can be identified by their dispersion ω(Hext). However, different to other ferromagnets ω(Hext) deviates from the expected behavior. Namely, a mode discontinuity is observed that can be attributed to a nonlinear process. Above a critical field the power spectrum reveals a redistribution of the energy within the spin-wave spectrum populated.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 22 June 2010

DOI:https://doi.org/10.1103/PhysRevB.82.134443

©2010 American Physical Society

Authors & Affiliations

Benjamin Lenk1,*, Gerrit Eilers1, Jaroslav Hamrle2, and Markus Münzenberg1

  • 1I. Institute of Physics, University of Göttingen, 37077 Göttingen, Germany
  • 2Centre for Advanced Innovation Technology, VSB-Technical University of Ostrava, 708 33 Ostrava-Poruba, Czech Republic

  • *Corresponding author. blenk@gwdg.de

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 82, Iss. 13 — 1 October 2010

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×