TY - JOUR
T1 - Spin-Wave-Mode Coexistence on the Nanoscale: A Consequence of the Oersted-Field-Induced Asymmetric Energy Landscape
AU - Dumas, Randy K.
AU - Iacocca, Ezio
AU - Bonetti, Stefano
AU - Sani, Sohrab R.
AU - Mohseni, Seyed Majid
AU - Eklund, Anders
AU - Persson, Johan
AU - Heinonen, Olle
AU - Åkerman, Johan
PY - 2013/6/18
Y1 - 2013/6/18
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/84879177932
U2 - 10.1103/PhysRevLett.110.257202
DO - 10.1103/PhysRevLett.110.257202
M3 - Article
SN - 0031-9007
VL - 110
JO - Physical Review Letters
JF - Physical Review Letters
IS - 25
M1 - 257202
ER -