| Autor: |
Krüger B; I. Institut für Theoretische Physik, Universität Hamburg, Jungiusstr. 9, 20355 Hamburg, Germany., Najafi M, Bohlens S, Frömter R, Möller DP, Pfannkuche D |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review letters [Phys Rev Lett] 2010 Feb 19; Vol. 104 (7), pp. 077201. Date of Electronic Publication: 2010 Feb 17. |
| DOI: |
10.1103/PhysRevLett.104.077201 |
| Abstrakt: |
A spin-polarized current traversing a ferromagnet with continuously varying magnetization exerts a torque on the magnetization. The nonadiabatic contribution to this spin-transfer torque is currently under strong debate, as its value differs by orders of magnitude in theoretical predictions and in measurements. Here, a measurement scheme is presented that allows us to determine the strength of the nonadiabatic spin torque accurately and directly. Analytical and numerical calculations show that the scheme is robust against the uncertainties of the exact current direction and Oersted fields. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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