Lagrangian formulation of the linear autonomous magnetization dynamics in spin-torque auto-oscillators (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Lagrangian formulation of the linear autonomous magnetization dynamics in spin-torque auto-oscillators (Articolo in rivista) (literal)

Anno

• 2011-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1016/j.amc.2011.02.043 (literal)

Alternative label

• G. Consolo(1,3), G. Gubbiotti(2), L. Giovannini(1,3) and R. Zivieri(1,3) (2011)
  Lagrangian formulation of the linear autonomous magnetization dynamics in spin-torque auto-oscillators
  in Applied mathematics and computation
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• G. Consolo(1,3), G. Gubbiotti(2), L. Giovannini(1,3) and R. Zivieri(1,3) (literal)

Pagina inizio

• 8204 (literal)

Pagina fine

• 8215 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 217 (literal)

Rivista

• Applied mathematics and computation (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• (1) Department of Physics and CNISM, University of Ferrara, Via G. Saragat 1, 44122 Ferrara, Italy (2) Istituto Officina dei Materiali del CNR (CNR-IOM), Research unit of Perugia, c/o Department of Physics, Via A. Pascoli, I-06123 Perugia, Italy (3) CNISM, Research unit of Perugia, Department of Physics, University of Perugia, Via A. Pascoli, 06123 Perugia, Italy (literal)

Titolo

• Lagrangian formulation of the linear autonomous magnetization dynamics in spin-torque auto-oscillators (literal)

Abstract

• A Lagrangian formalism is used to find steady-state solution of the Landau-Lifshitz-Gilbert-Slonczewski equation corresponding to the linear autonomous dynamics of a magnetic auto-oscillatory system subject to the action of a spin-polarized electric current. In such a system, two concurrent dissipative mechanisms, arising from the positive intrinsic dissipation and the negative current-induced one, take place simultaneously and make the excitation of a steady precessional motion of the magnetization vector conceivable. The proposed formulation leads to the definition of a complex generalized non-Hermitian Eigenvalue problem, both in the case of a macrospin model and in the more general case of an ensemble of magnetic particles interacting each other through magnetostatic and exchange interactions. This method allows to identify the spin-wave normal modes which become unstable in the presence of the two competing dissipative contributions and provides an accurate estimation of the value of the excitation threshold current. (literal)

Prodotto di

• Nanomagnetismo (MD.P06.011.002) (Modulo)
• Materiali e dispositivi innovativi per l'elettronica la spintronica e l'energetica (MD.P04.026.001) (Modulo)
• Nanomagnetismo controllo della dinamica della magnetizzazione in nanomagneti (MD.P06.011.001) (Modulo)

Autore CNR

• GIANLUCA GUBBIOTTI (Unità di personale interno)

Incoming links:

Prodotto

• Nanomagnetismo (MD.P06.011.002) (Modulo)
• Nanomagnetismo controllo della dinamica della magnetizzazione in nanomagneti (MD.P06.011.001) (Modulo)
• Materiali e dispositivi innovativi per l'elettronica la spintronica e l'energetica (MD.P04.026.001) (Modulo)

Autore CNR di

• GIANLUCA GUBBIOTTI (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Applied mathematics and computation (Rivista)