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      Spin wave mode coexistence on the nano-scale: A consequence of the Oersted field induced asymmetric energy landscape

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          Abstract

          It has been argued that if multiple spin wave modes are competing for the same centrally located energy source, as in a nanocontact spin torque oscillator, that only one mode should survive in the steady state. Here, the experimental conditions necessary for mode coexistence are explored. Mode coexistence is facilitated by the local field asymmetries induced by the spatially inhomogeneous Oersted field, which leads to a physical separation of the modes, and is further promoted by spin wave localization at reduced applied field angles. Finally, both simulation and experiment reveal a low frequency signal consistent with the intermodulation of two coexistent modes.

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          Author and article information

          Journal
          28 March 2013
          Article
          10.1103/PhysRevLett.110.257202
          23829755
          1303.7148

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

          Custom metadata
          20 pages (including supplementary material), 6 figures
          cond-mat.mes-hall

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