Tailoring laser-induced domain wall pinning

Möhrke, Philipp; Rhensius, Jan; Thiele, Jan-Ulrich; Heyderman, Laura; Kläui, Mathias

Tailoring laser-induced domain wall pinning

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Date

2010

Authors

Möhrke, Philipp

Rhensius, Jan

Thiele, Jan-Ulrich

Heyderman, Laura

Kläui, Mathias

EU project number

208162

Project

MASPIC (7. RP)

Collections

Physik
Zukunftskolleg

Publication type

Journal article

Published in

Solid State Communications ; 150 (2010), 11-12. - pp. 489-491. - ISSN 0038-1098

Abstract

Field-induced domain wall (DW) motion in Permalloy microwires under the influence of thermal gradients is studied using magneto-optical Kerr-microscopy. The DW is found to be pinned at two positions in a laser spot focused onto the wire. By tuning the laser power, the pinning strength can be engineered. On increasing the laser power, the depinning field for the first pinning site in the first half of the laser spot is found to decrease, while for the second pinning site in the spot region located beyond the centre of the spot it increases. Below a threshold power WT, the pinning strength can be tuned reversibly while above WT irreversible increases in the pinning strength due to structural changes occur. This effect can be employed for flexible pinning sites for DW devices.

Subject (DDC)

530 Physics

Keywords

Nanostructures,Spin dynamics,Light absorbtion and reflection

Cite This

ISO 690

MÖHRKE, Philipp, Jan RHENSIUS, Jan-Ulrich THIELE, Laura HEYDERMAN, Mathias KLÄUI, 2010. Tailoring laser-induced domain wall pinning. In: Solid State Communications. 150(11-12), pp. 489-491. ISSN 0038-1098. Available under: doi: 10.1016/j.ssc.2009.11.040

BibTex

@article{Mohrke2010Tailo-19863,
  year={2010},
  doi={10.1016/j.ssc.2009.11.040},
  title={Tailoring laser-induced domain wall pinning},
  number={11-12},
  volume={150},
  issn={0038-1098},
  journal={Solid State Communications},
  pages={489--491},
  author={Möhrke, Philipp and Rhensius, Jan and Thiele, Jan-Ulrich and Heyderman, Laura and Kläui, Mathias}
}

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