Publikation: Current-induced motion and pinning of domain walls in spin-valve nanowires studied by XMCD-PEEM
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2010
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Uhlíř, Vojtěch
Pizzini, Stefania
Rougemaille, Nicolas
Novotný, Jan
Cros, Vincent
Jiménez, Erika
Faini, Giancarlo
Sirotti, Fausto
Tieg, Carsten
et al.
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Physical Review B. American Physical Society (APS). 2010, 81(22), 224418. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.81.224418
Zusammenfassung
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 4×1011 A/m2.
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UHLÍŘ, Vojtěch, Stefania PIZZINI, Nicolas ROUGEMAILLE, Jan NOVOTNÝ, Vincent CROS, Erika JIMÉNEZ, Giancarlo FAINI, Lutz HEYNE, Fausto SIROTTI, Carsten TIEG, 2010. Current-induced motion and pinning of domain walls in spin-valve nanowires studied by XMCD-PEEM. In: Physical Review B. American Physical Society (APS). 2010, 81(22), 224418. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.81.224418BibTex
@article{Uhlir2010-06-11Curre-51846,
year={2010},
doi={10.1103/PhysRevB.81.224418},
title={Current-induced motion and pinning of domain walls in spin-valve nanowires studied by XMCD-PEEM},
number={22},
volume={81},
issn={2469-9950},
journal={Physical Review B},
author={Uhlíř, Vojtěch and Pizzini, Stefania and Rougemaille, Nicolas and Novotný, Jan and Cros, Vincent and Jiménez, Erika and Faini, Giancarlo and Heyne, Lutz and Sirotti, Fausto and Tieg, Carsten},
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<dcterms:abstract xml:lang="eng">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<sup>11</sup> A/m<sup>2</sup>.</dcterms:abstract>
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