Current-induced motion and pinning of domain walls in spin-valve nanowires studied by XMCD-PEEM
Very large average velocities, up to 600 m/s, have been found for domain-wall motion driven by 3-ns-long pulses of electric current in zero magnetic field in the NiFe layer of 200-nm-wide NiFe/Cu/Co nanowires. For longer pulses, the domain-wall motion is strongly hindered by pinning potentials. Dipo...
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| Veröffentlicht in: | Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2010-06, Vol.81 (22), Article 224418 |
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| container_title | Physical review. B, Condensed matter and materials physics |
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| creator | Uhlíř, V. Pizzini, S. Rougemaille, N. Novotný, J. Cros, V. Jiménez, E. Faini, G. Heyne, L. Sirotti, F. Tieg, C. Bendounan, A. Maccherozzi, F. Belkhou, R. Grollier, J. Anane, A. Vogel, J. |
| description | Very large average velocities, up to 600 m/s, have been found for domain-wall motion driven by 3-ns-long pulses of electric current in zero magnetic field in the NiFe layer of 200-nm-wide NiFe/Cu/Co nanowires. For longer pulses, the domain-wall motion is strongly hindered by pinning potentials. Dipolar interactions between the NiFe and Co layers caused by anisotropy inhomogeneities have been identified as the most important among the different potential sources of DW pinning. The domain-wall velocities increase with current density, but a substantial drop is observed at current densities above 4×10^11 A/m2 |
| doi_str_mv | 10.1103/PhysRevB.81.224418 |
| format | Article |
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| subjects | Condensed Matter Other Physics |
| title | Current-induced motion and pinning of domain walls in spin-valve nanowires studied by XMCD-PEEM |
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