On the Travelling Wave Solution for the Current-Driven Steady Domain Wall Motion in Magnetic Nanostrips under the Influence of Rashba Field
Spin-orbit Rashba effect applies a torque on the magnetization of a ferromagnetic nanostrip in the case of structural inversion asymmetry, also affecting the steady domain wall motion induced by a spin-polarized current. This influence is here analytically studied in the framework of the extended La...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2012/105253 |
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| author | Vito Puliafito Giancarlo Consolo |
| author_facet | Vito Puliafito Giancarlo Consolo |
| author_sort | Vito Puliafito |
| collection | DOAJ |
| description | Spin-orbit Rashba effect applies a torque on the magnetization of a ferromagnetic nanostrip in the case of structural inversion asymmetry, also affecting the steady domain wall motion induced by a spin-polarized current. This influence is here analytically studied in the framework of the extended Landau-Lifshitz-Gilbert equation, including the Rashba effect as an additive term of the effective field. Results of previous micromagnetic simulations and experiments have shown that this field yields an increased value of the Walker breakdown current together with an enlargement of the domain wall width. In order to analytically describe these results, the standard travelling wave ansatz for the steady domain wall motion is here adopted. Results of our investigations reveal the impossibility to reproduce, at the same time, the previous features and suggest the need of a more sophisticated model whose development requires, in turn, additional information to be extracted from ad hoc micromagnetic simulations. |
| format | Article |
| id | doaj-art-8eefb7bcc2b846e9b908f01693eb0026 |
| institution | OA Journals |
| issn | 1687-8108 1687-8124 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Condensed Matter Physics |
| spelling | doaj-art-8eefb7bcc2b846e9b908f01693eb00262025-08-20T02:09:21ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242012-01-01201210.1155/2012/105253105253On the Travelling Wave Solution for the Current-Driven Steady Domain Wall Motion in Magnetic Nanostrips under the Influence of Rashba FieldVito Puliafito0Giancarlo Consolo1Department of Matter Physics and Electronic Engineering, University of Messina, V.le F. Stagno D’Alcontres 31, 98166 Messina, ItalyDepartment of Science for Engineering and Architecture, University of Messina, Contrada Di Dio, 98166 Messina, ItalySpin-orbit Rashba effect applies a torque on the magnetization of a ferromagnetic nanostrip in the case of structural inversion asymmetry, also affecting the steady domain wall motion induced by a spin-polarized current. This influence is here analytically studied in the framework of the extended Landau-Lifshitz-Gilbert equation, including the Rashba effect as an additive term of the effective field. Results of previous micromagnetic simulations and experiments have shown that this field yields an increased value of the Walker breakdown current together with an enlargement of the domain wall width. In order to analytically describe these results, the standard travelling wave ansatz for the steady domain wall motion is here adopted. Results of our investigations reveal the impossibility to reproduce, at the same time, the previous features and suggest the need of a more sophisticated model whose development requires, in turn, additional information to be extracted from ad hoc micromagnetic simulations.http://dx.doi.org/10.1155/2012/105253 |
| spellingShingle | Vito Puliafito Giancarlo Consolo On the Travelling Wave Solution for the Current-Driven Steady Domain Wall Motion in Magnetic Nanostrips under the Influence of Rashba Field Advances in Condensed Matter Physics |
| title | On the Travelling Wave Solution for the Current-Driven Steady
Domain Wall Motion in Magnetic Nanostrips under the Influence of Rashba Field |
| title_full | On the Travelling Wave Solution for the Current-Driven Steady
Domain Wall Motion in Magnetic Nanostrips under the Influence of Rashba Field |
| title_fullStr | On the Travelling Wave Solution for the Current-Driven Steady
Domain Wall Motion in Magnetic Nanostrips under the Influence of Rashba Field |
| title_full_unstemmed | On the Travelling Wave Solution for the Current-Driven Steady
Domain Wall Motion in Magnetic Nanostrips under the Influence of Rashba Field |
| title_short | On the Travelling Wave Solution for the Current-Driven Steady
Domain Wall Motion in Magnetic Nanostrips under the Influence of Rashba Field |
| title_sort | on the travelling wave solution for the current driven steady domain wall motion in magnetic nanostrips under the influence of rashba field |
| url | http://dx.doi.org/10.1155/2012/105253 |
| work_keys_str_mv | AT vitopuliafito onthetravellingwavesolutionforthecurrentdrivensteadydomainwallmotioninmagneticnanostripsundertheinfluenceofrashbafield AT giancarloconsolo onthetravellingwavesolutionforthecurrentdrivensteadydomainwallmotioninmagneticnanostripsundertheinfluenceofrashbafield |