Temperature dependence of the spin torque effect in current-induced domain wall motion
| Type of Publication: | Journal article |
| URI (citable link): | http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-54799 |
| Author: | Laufenberg, Markus; Bührer, Wolfgang; Bedau, Daniel; Melchy, Pierre-Eric; Kläui, Mathias; Vila, Laurent; Faini, Giancarlo; Vaz, Carlos A. F.; Bland, J. Anthony C.; Rüdiger, Ulrich |
| Year of publication: | 2006 |
| Published in: | Physical Review Letters ; 97 (2006), 4. - 46602. - ISSN 0031-9007. - eISSN 1079-7114 |
| DOI (citable link): | https://dx.doi.org/10.1103/PhysRevLett.97.046602 |
| Summary: |
We present an experimental study of domain wall motion induced by current pulses as well as by conventional magnetic fields at temperatures between 2 and 300 K in a 110 nm wide and 34 nm thick Ni80Fe20 ring. We observe that, in contrast with field-induced domain wall motion, which is a thermally activated process, the critical current density for current-induced domain wall motion increases with increasing temperature, which implies a reduction of the spin torque efficiency. The effect of Joule heating due to the current pulses is measured and taken into account to obtain critical fields and current densities at constant sample temperatures. This allows for a comparison of our results with theory.
|
| PACS Classification: | 72.25.Ba; 75.60.Ch; 75.75.+a; 85.70.Kh |
| Subject (DDC): | 530 Physics |
| Link to License: | Attribution-NonCommercial-NoDerivs 2.0 Generic |
| Bibliography of Konstanz: | Yes |
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LAUFENBERG, Markus, Wolfgang BÜHRER, Daniel BEDAU, Pierre-Eric MELCHY, Mathias KLÄUI, Laurent VILA, Giancarlo FAINI, Carlos A. F. VAZ, J. Anthony C. BLAND, Ulrich RÜDIGER, 2006. Temperature dependence of the spin torque effect in current-induced domain wall motion. In: Physical Review Letters. 97(4), 46602. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.97.046602
@article{Laufenberg2006Tempe-8919, title={Temperature dependence of the spin torque effect in current-induced domain wall motion}, year={2006}, doi={10.1103/PhysRevLett.97.046602}, number={4}, volume={97}, issn={0031-9007}, journal={Physical Review Letters}, author={Laufenberg, Markus and Bührer, Wolfgang and Bedau, Daniel and Melchy, Pierre-Eric and Kläui, Mathias and Vila, Laurent and Faini, Giancarlo and Vaz, Carlos A. F. and Bland, J. Anthony C. and Rüdiger, Ulrich}, note={Article Number: 46602} }
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