• Rapid Communication

Ultrafast spin dynamics across compensation points in ferrimagnetic GdFeCo: The role of angular momentum compensation

C. D. Stanciu, A. V. Kimel, F. Hansteen, A. Tsukamoto, A. Itoh, A. Kirilyuk, and Th. Rasing
Phys. Rev. B 73, 220402(R) – Published 12 June 2006

Abstract

Using an all-optical pump and probe technique, we have investigated the temperature dependence of the ultrafast magnetic response in a ferrimagnetic amorphous GdFeCo thin film. When the temperature of the sample approaches the angular momentum compensation point, both frequency and the Gilbert damping parameter of the magnetization precession increase significantly. In addition, the high-frequency exchange mode softens and becomes observable. The observed high-speed and strongly damped spin dynamics in the vicinity of the compensation of the angular momentum is ideal for ultrafast ringing-free precessional switching in magnetic and magneto-optical recording.

  • Figure
  • Figure
  • Figure
  • Received 15 May 2006

DOI:https://doi.org/10.1103/PhysRevB.73.220402

©2006 American Physical Society

Authors & Affiliations

C. D. Stanciu1, A. V. Kimel1, F. Hansteen1, A. Tsukamoto1,2, A. Itoh2, A. Kirilyuk1, and Th. Rasing1

  • 1Institute for Molecules and Materials, Radboud University Nijmegen, Toernooiveld 1, 6525 ED Nijmegen, The Netherlands
  • 2College of Science and Technology, Nihon University, 7-24-1 Funabashi, Chiba, Japan

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 73, Iss. 22 — 1 June 2006

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
×