Magnonics pp 3-15 | Cite as

Spin-Wave Eigen-modes in a Normally Magnetized Nano-pillar

  • V. V. Naletov
  • G. de LoubensEmail author
  • S. Borlenghi
  • O. Klein
Part of the Topics in Applied Physics book series (TAP, volume 125)


We report on a spectroscopic study of the spin-wave eigen-modes in a circular spin-valve nano-pillar, perpendicularly magnetized along \({\hat{\boldsymbol{z}}}\). Spectroscopy is performed by Magnetic Resonance Force Microscopy (MRFM). Distinct spectra are measured depending on whether the nano-pillar is excited by a uniform in-plane radio-frequency (RF) magnetic field or by an RF current flowing perpendicularly through the layers. These results are in agreement with micromagnetic simulations of the time decay response of the local magnetization to excitations with different azimuthal symmetries, \(({\hat{\boldsymbol{x}}} + i {\hat{\boldsymbol {y}}})e^{-i\ell\phi}\). This demonstrates that the azimuthal -index is the discriminating parameter for the selection rules, as only =0 modes are excited by the RF magnetic field, whereas only =+1 modes are excited by the RF current, owing to the orthoradial symmetry of the induced RF Oersted field.


Dipolar Coupling Magnetic Layer Magnetization Dynamic Spin Transfer Uniform Mode 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



We thank V. Cros, J. Grollier, H. Hurdequint, C. Ulysse, G. Faini, V.S. Tiberkevich, and A.N. Slavin for their help and support. This research was partially supported by the European Grant Master (NMP-FP7 212257) and by the French Grant Voice (ANR-09-NANO-006-01).


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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • V. V. Naletov
    • 1
    • 2
  • G. de Loubens
    • 1
    Email author
  • S. Borlenghi
    • 1
  • O. Klein
    • 1
  1. 1.Service de Physique de l’État Condensé (URA 2464)CEA SaclayGif-sur-YvetteFrance
  2. 2.Physics DepartmentKazan Federal UniversityKazanRussian Federation

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