Interfacial Dzyaloshinskii-Moriya interaction in Ta\Co20Fe60B20\MgO nanowires
We report current-induced domain wall motion (CIDWM) in Ta\Co20Fe60B20\MgO nanowires. Domain walls are observed to move against the electron flow when no magnetic field is applied, while a field along the nanowires strongly affects the domain wall motion direction and velocity. A symmetric effect is...
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| creator | R Lo Conte Martinez, E Hrabec, A Lamperti, A Schulz, T Nasi, L Lazzarini, L Maccherozzi, F Dhesi, S S Ocker, B Marrows, C H Moore, T A Klaeui, M |
| description | We report current-induced domain wall motion (CIDWM) in Ta\Co20Fe60B20\MgO nanowires. Domain walls are observed to move against the electron flow when no magnetic field is applied, while a field along the nanowires strongly affects the domain wall motion direction and velocity. A symmetric effect is observed for up-down and down-up domain walls. This indicates the presence of right-handed domain walls, due to a Dzyaloshinskii-Moriya interaction (DMI) with a DMI coefficient D=+0.06 mJ/m2. The positive DMI coefficient is interpreted to be a consequence of boron diffusion into the tantalum buffer layer during annealing. In a Pt\Co68Fe22B10\MgO nanowire CIDWM along the electron flow was observed, corroborating this interpretation. The experimental results are compared to 1D-model simulations including the effects of pinning. This advanced modelling allows us to reproduce the experiment outcomes and reliably extract a spin-Hall angle {\theta}SH=-0.11 for Ta in the nanowires, showing the importance of an analysis that goes beyond the currently used model for perfect nanowires. |
| doi_str_mv | 10.48550/arxiv.1409.3753 |
| format | Article |
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Domain walls are observed to move against the electron flow when no magnetic field is applied, while a field along the nanowires strongly affects the domain wall motion direction and velocity. A symmetric effect is observed for up-down and down-up domain walls. This indicates the presence of right-handed domain walls, due to a Dzyaloshinskii-Moriya interaction (DMI) with a DMI coefficient D=+0.06 mJ/m2. The positive DMI coefficient is interpreted to be a consequence of boron diffusion into the tantalum buffer layer during annealing. In a Pt\Co68Fe22B10\MgO nanowire CIDWM along the electron flow was observed, corroborating this interpretation. The experimental results are compared to 1D-model simulations including the effects of pinning. This advanced modelling allows us to reproduce the experiment outcomes and reliably extract a spin-Hall angle {\theta}SH=-0.11 for Ta in the nanowires, showing the importance of an analysis that goes beyond the currently used model for perfect nanowires.</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.1409.3753</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Boron ; Buffer layers ; Computer simulation ; Diffusion layers ; Domain walls ; Magnesium oxide ; Magnetic fields ; Nanowires ; Physics - Mesoscale and Nanoscale Physics ; Tantalum</subject><ispartof>arXiv.org, 2014-09</ispartof><rights>2014. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). 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Domain walls are observed to move against the electron flow when no magnetic field is applied, while a field along the nanowires strongly affects the domain wall motion direction and velocity. A symmetric effect is observed for up-down and down-up domain walls. This indicates the presence of right-handed domain walls, due to a Dzyaloshinskii-Moriya interaction (DMI) with a DMI coefficient D=+0.06 mJ/m2. The positive DMI coefficient is interpreted to be a consequence of boron diffusion into the tantalum buffer layer during annealing. In a Pt\Co68Fe22B10\MgO nanowire CIDWM along the electron flow was observed, corroborating this interpretation. The experimental results are compared to 1D-model simulations including the effects of pinning. This advanced modelling allows us to reproduce the experiment outcomes and reliably extract a spin-Hall angle {\theta}SH=-0.11 for Ta in the nanowires, showing the importance of an analysis that goes beyond the currently used model for perfect nanowires.</description><subject>Boron</subject><subject>Buffer layers</subject><subject>Computer simulation</subject><subject>Diffusion layers</subject><subject>Domain walls</subject><subject>Magnesium oxide</subject><subject>Magnetic fields</subject><subject>Nanowires</subject><subject>Physics - Mesoscale and Nanoscale Physics</subject><subject>Tantalum</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><sourceid>GOX</sourceid><recordid>eNotjz1PwzAYhC0kJKrSnQlFYk7wZ-yMUChUatQlY6XoTWKDS4iLnQLh15NQprvh0ekehK4ITrgSAt-C_7afCeE4S5gU7AzNKGMkVpzSC7QIYY8xpqmkQrAZytddr72B2kIbPfwM0LrwarvwZm2cO28HiOxEQN1b1409KmC3dBSvdIrvKd7lL9uog859Wa_DJTo30Aa9-M85KlaPxfI53myf1su7TQyCqDjNlAQgfFyoaikbkmagJDaa6IqYhqsGq0YyLlNjlBZCGNCgBK2IyCgIyubo-jT7p1oevH0HP5STcjkpj8DNCTh493HUoS_37ui78VJJsaIyIyxV7BcfrVhs</recordid><startdate>20140912</startdate><enddate>20140912</enddate><creator>R Lo Conte</creator><creator>Martinez, E</creator><creator>Hrabec, A</creator><creator>Lamperti, A</creator><creator>Schulz, T</creator><creator>Nasi, L</creator><creator>Lazzarini, L</creator><creator>Maccherozzi, F</creator><creator>Dhesi, S S</creator><creator>Ocker, B</creator><creator>Marrows, C H</creator><creator>Moore, T A</creator><creator>Klaeui, M</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PHGZM</scope><scope>PHGZT</scope><scope>PIMPY</scope><scope>PKEHL</scope><scope>PQEST</scope><scope>PQGLB</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20140912</creationdate><title>Interfacial Dzyaloshinskii-Moriya interaction in Ta\Co20Fe60B20\MgO nanowires</title><author>R Lo Conte ; Martinez, E ; Hrabec, A ; Lamperti, A ; Schulz, T ; Nasi, L ; Lazzarini, L ; Maccherozzi, F ; Dhesi, S S ; Ocker, B ; Marrows, C H ; Moore, T A ; Klaeui, M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a518-6987aa14e60bc77d169a870fe1eb1fd48d08d73476ff8e555faea852b1592a523</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Boron</topic><topic>Buffer layers</topic><topic>Computer simulation</topic><topic>Diffusion layers</topic><topic>Domain walls</topic><topic>Magnesium oxide</topic><topic>Magnetic fields</topic><topic>Nanowires</topic><topic>Physics - Mesoscale and Nanoscale Physics</topic><topic>Tantalum</topic><toplevel>online_resources</toplevel><creatorcontrib>R Lo Conte</creatorcontrib><creatorcontrib>Martinez, E</creatorcontrib><creatorcontrib>Hrabec, A</creatorcontrib><creatorcontrib>Lamperti, A</creatorcontrib><creatorcontrib>Schulz, T</creatorcontrib><creatorcontrib>Nasi, L</creatorcontrib><creatorcontrib>Lazzarini, L</creatorcontrib><creatorcontrib>Maccherozzi, F</creatorcontrib><creatorcontrib>Dhesi, S S</creatorcontrib><creatorcontrib>Ocker, B</creatorcontrib><creatorcontrib>Marrows, C H</creatorcontrib><creatorcontrib>Moore, T A</creatorcontrib><creatorcontrib>Klaeui, M</creatorcontrib><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>ProQuest Central (New)</collection><collection>ProQuest One Academic (New)</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Middle East (New)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Applied & Life Sciences</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><collection>arXiv.org</collection><jtitle>arXiv.org</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>R Lo Conte</au><au>Martinez, E</au><au>Hrabec, A</au><au>Lamperti, A</au><au>Schulz, T</au><au>Nasi, L</au><au>Lazzarini, L</au><au>Maccherozzi, F</au><au>Dhesi, S S</au><au>Ocker, B</au><au>Marrows, C H</au><au>Moore, T A</au><au>Klaeui, M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Interfacial Dzyaloshinskii-Moriya interaction in Ta\Co20Fe60B20\MgO nanowires</atitle><jtitle>arXiv.org</jtitle><date>2014-09-12</date><risdate>2014</risdate><eissn>2331-8422</eissn><abstract>We report current-induced domain wall motion (CIDWM) in Ta\Co20Fe60B20\MgO nanowires. Domain walls are observed to move against the electron flow when no magnetic field is applied, while a field along the nanowires strongly affects the domain wall motion direction and velocity. A symmetric effect is observed for up-down and down-up domain walls. This indicates the presence of right-handed domain walls, due to a Dzyaloshinskii-Moriya interaction (DMI) with a DMI coefficient D=+0.06 mJ/m2. The positive DMI coefficient is interpreted to be a consequence of boron diffusion into the tantalum buffer layer during annealing. In a Pt\Co68Fe22B10\MgO nanowire CIDWM along the electron flow was observed, corroborating this interpretation. The experimental results are compared to 1D-model simulations including the effects of pinning. 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| subjects | Boron Buffer layers Computer simulation Diffusion layers Domain walls Magnesium oxide Magnetic fields Nanowires Physics - Mesoscale and Nanoscale Physics Tantalum |
| title | Interfacial Dzyaloshinskii-Moriya interaction in Ta\Co20Fe60B20\MgO nanowires |
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