Direct observation of spin-torque driven magnetization reversal through nonuniform modes
We present time-resolved x-ray images with 30 nm spatial and 70 ps temporal resolution, which reveal details of the spatially resolved magnetization evolution in nanoscale samples of various dimensions during reversible spin-torque switching processes. Our data in conjunction with micromagnetic simu...
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| Veröffentlicht in: | Physical review letters 2008-06, Vol.100 (24), p.247201-247201, Article 247201 |
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| container_title | Physical review letters |
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| creator | Strachan, J P Chembrolu, V Acremann, Y Yu, X W Tulapurkar, A A Tyliszczak, T Katine, J A Carey, M J Scheinfein, M R Siegmann, H C Stöhr, J |
| description | We present time-resolved x-ray images with 30 nm spatial and 70 ps temporal resolution, which reveal details of the spatially resolved magnetization evolution in nanoscale samples of various dimensions during reversible spin-torque switching processes. Our data in conjunction with micromagnetic simulations suggest a simple unified picture of magnetic switching based on the motion of a magnetic vortex. With decreasing size of the magnetic element the path of the vortex core moves from inside to outside of the nanoelement, and the switching process evolves from a curled nonuniform to an increasingly uniform mode. |
| doi_str_mv | 10.1103/physrevlett.100.247201 |
| format | Article |
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| title | Direct observation of spin-torque driven magnetization reversal through nonuniform modes |
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