[19p-P1-1~74] 10 Spintronics and Magnetics（Poster）

[19p-P1-34] Separation of magnetic vortices resonance excited by magnetic torque and spin transfer torque

〇Tomoki Tanazawa¹, Yukio Nozaki¹ (1.Keio Univ.)

Keywords:spintronics,spin torque

The magnetic vortex is realized in micron size ferromagnet disk. When rf field or rf current is applied, the magnetic vortex core rotates. The resonant frequency of the magnetic vortex by rf field is equal to that by rf current. To the contrary , it is theoretically reported that the resonant frequency excited by rf field is different from that excited by rf current in the double vortex structure. We experimentally detected the separation of resonant frequency by rf field and rf current.