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Phase Coherent Precessional Magnetization Reversal in Microscopic Spin Valve Elements

H. W. Schumacher, C. Chappert, P. Crozat, R. C. Sousa, P. P. Freitas, J. Miltat, J. Fassbender, and B. Hillebrands
Phys. Rev. Lett. 90, 017201 – Published 3 January 2003
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Abstract

We evidence multiple coherent precessional magnetization reversal in microscopic spin valves. Stable, reversible, and highly efficient magnetization switching is triggered by transverse field pulses as short as 140 ps with energies down to 15 pJ. At high fields a phase coherent reversal is found revealing periodic transitions from switching to nonswitching under variation of pulse parameters. At the low field limit the existence of a relaxation dominated regime is established allowing switching by pulse amplitudes below the quasistatic switching threshold.

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  • Received 3 June 2002

DOI:https://doi.org/10.1103/PhysRevLett.90.017201

©2003 American Physical Society

Authors & Affiliations

H. W. Schumacher1,*, C. Chappert1, P. Crozat1, R. C. Sousa2, P. P. Freitas2, J. Miltat3, J. Fassbender4, and B. Hillebrands4

  • 1Institut d’Electronique Fondamentale, UMR 8622, CNRS, Université Paris Sud, Bâtiment 220, 91405 Orsay, France
  • 2Instituto de Engenharia de Sistemas e Computadores, Rua Alves Redol, 9, P-1000 Lisboa, Portugal
  • 3Laboratoire de Physique des Solides, CNRS, Université Paris Sud, Bâtiment 510, 91405 Orsay, France
  • 4Fachbereich Physik, Universität Kaiserslautern, Erwin-Schrödinger-Straße 56, 67663 Kaiserslautern, Germany

  • *Corresponding author. Email address: schumach@ief.u-psud.fr

See Also

Swifter Switching

Celeste Biever
Phys. Rev. Focus 11, 3 (2003)

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Issue

Vol. 90, Iss. 1 — 10 January 2003

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