Enhanced current-induced domain wall motion by tuning perpendicular magnetic anisotropy
The effect of perpendicular magnetic anisotropy (PMA) on current-induced domain wall (DW) motion is investigated by micromagnetic simulations. The critical current density J[subscript C] to drive DWs into periodic transformation and continuous motion by adiabatic spin transfer torque decreases with...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Institute of Physics (AIP)
2013
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| Online Access: | http://hdl.handle.net/1721.1/79699 |
| _version_ | 1826214618378272768 |
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| author | Emori, Satoru Beach, Geoffrey Stephen |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Emori, Satoru Beach, Geoffrey Stephen |
| author_sort | Emori, Satoru |
| collection | MIT |
| description | The effect of perpendicular magnetic anisotropy (PMA) on current-induced domain wall (DW) motion is investigated by micromagnetic simulations. The critical current density J[subscript C] to drive DWs into periodic transformation and continuous motion by adiabatic spin transfer torque decreases with increasing PMA. Also, with optimized PMA that almost exactly compensates the demagnetizing field, the adiabatic displacement of DWs driven by currents less than J[subscript C] is strongly enhanced. Since PMA can be controlled easily in magnetic multilayer films, this technique of enhancing current-induced DW motion may be practical for device applications. |
| first_indexed | 2024-09-23T16:08:20Z |
| format | Article |
| id | mit-1721.1/79699 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:08:20Z |
| publishDate | 2013 |
| publisher | American Institute of Physics (AIP) |
| record_format | dspace |
| spelling | mit-1721.1/796992022-10-02T06:36:26Z Enhanced current-induced domain wall motion by tuning perpendicular magnetic anisotropy Emori, Satoru Beach, Geoffrey Stephen Massachusetts Institute of Technology. Department of Materials Science and Engineering Emori, Satoru Beach, Geoffrey Stephen The effect of perpendicular magnetic anisotropy (PMA) on current-induced domain wall (DW) motion is investigated by micromagnetic simulations. The critical current density J[subscript C] to drive DWs into periodic transformation and continuous motion by adiabatic spin transfer torque decreases with increasing PMA. Also, with optimized PMA that almost exactly compensates the demagnetizing field, the adiabatic displacement of DWs driven by currents less than J[subscript C] is strongly enhanced. Since PMA can be controlled easily in magnetic multilayer films, this technique of enhancing current-induced DW motion may be practical for device applications. National Science Foundation (U.S.). Graduate Research Fellowship Program 2013-07-25T15:41:54Z 2013-07-25T15:41:54Z 2011-03 2010-12 Article http://purl.org/eprint/type/JournalArticle 00036951 1077-3118 http://hdl.handle.net/1721.1/79699 Emori, Satoru, and Geoffrey S. D. Beach. Enhanced Current-induced Domain Wall Motion by Tuning Perpendicular Magnetic Anisotropy. Applied Physics Letters 98, no. 13 (2011): © 2011 American Institute of Physics en_US http://dx.doi.org/10.1063/1.3570652 Applied Physics Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Institute of Physics (AIP) MIT web domain |
| spellingShingle | Emori, Satoru Beach, Geoffrey Stephen Enhanced current-induced domain wall motion by tuning perpendicular magnetic anisotropy |
| title | Enhanced current-induced domain wall motion by tuning perpendicular magnetic anisotropy |
| title_full | Enhanced current-induced domain wall motion by tuning perpendicular magnetic anisotropy |
| title_fullStr | Enhanced current-induced domain wall motion by tuning perpendicular magnetic anisotropy |
| title_full_unstemmed | Enhanced current-induced domain wall motion by tuning perpendicular magnetic anisotropy |
| title_short | Enhanced current-induced domain wall motion by tuning perpendicular magnetic anisotropy |
| title_sort | enhanced current induced domain wall motion by tuning perpendicular magnetic anisotropy |
| url | http://hdl.handle.net/1721.1/79699 |
| work_keys_str_mv | AT emorisatoru enhancedcurrentinduceddomainwallmotionbytuningperpendicularmagneticanisotropy AT beachgeoffreystephen enhancedcurrentinduceddomainwallmotionbytuningperpendicularmagneticanisotropy |