Magnetic vortex chirality switching in Permalloy nanowires with asymmetric notches
We have investigated the motion of vortex domain walls passing across non symmetric triangular notches in single Permalloy nanowires. We have measured hysteresis cycles using the focused magneto-optical Kerr effect before and beyond the notch, which allowed to probe beyond the notch the occurrence p...
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| creator | Brandão, J Novak, R L Lozano, H Soledade, P R Mello, A Garcia, F Sampaio, L C |
| description | We have investigated the motion of vortex domain walls passing across non symmetric triangular notches in single Permalloy nanowires. We have measured hysteresis cycles using the focused magneto-optical Kerr effect before and beyond the notch, which allowed to probe beyond the notch the occurrence probability of clockwise (CW) and counter-clockwise (CCW) walls in tail-to-tail (TT) and head-to-head (HH) configurations. We present experimental evidence of chirality flipping provided by the vortex -- notch interaction. With a low exit angle the probability of chirality flipping increases and here with the lowest angle of 15\(^o\) the probability of propagation of the energetically favored domain wall configuration (CCW for TT or CW for HH walls) is \(\approx 75\%\). Micromagnetic simulations reveal details of the chirality reversal dynamics. |
| doi_str_mv | 10.48550/arxiv.1409.6370 |
| format | Article |
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We have measured hysteresis cycles using the focused magneto-optical Kerr effect before and beyond the notch, which allowed to probe beyond the notch the occurrence probability of clockwise (CW) and counter-clockwise (CCW) walls in tail-to-tail (TT) and head-to-head (HH) configurations. We present experimental evidence of chirality flipping provided by the vortex -- notch interaction. With a low exit angle the probability of chirality flipping increases and here with the lowest angle of 15\(^o\) the probability of propagation of the energetically favored domain wall configuration (CCW for TT or CW for HH walls) is \(\approx 75\%\). 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Micromagnetic simulations reveal details of the chirality reversal dynamics.</description><subject>Chirality</subject><subject>Configurations</subject><subject>Domain walls</subject><subject>Exit angle</subject><subject>Ferrous alloys</subject><subject>Kerr magnetooptical effect</subject><subject>Magnetic alloys</subject><subject>Nanowires</subject><subject>Notches</subject><subject>Physics - Mesoscale and Nanoscale Physics</subject><subject>Vortices</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GOX</sourceid><recordid>eNotj0tLAzEUhYMgWGr3riTgemoek9dSii-oKOp-yCSZNmUmU5P0Mf_eqXV1OdyPw_kAuMFoXkrG0L2OR7-f4xKpOacCXYAJoRQXsiTkCsxS2iCECBeEMToBn296FVz2Bu77mN0RmrWPuvV5gOng85jCCvoAP1zsdNv2Aww69AcfXYLjfw11GrrO5Tg2hH7kXboGl41uk5v93yn4enr8XrwUy_fn18XDstAMq0ILLBHFAhvOsTONM1bomnEsJGbKOlnWtcWsdsRxSy1ShteW10IbzC1q6BTcnlv_dKtt9J2OQ3XSrk7aI3B3Brax_9m5lKtNv4thXFQRJBFSXElFfwGUZVy-</recordid><startdate>20141106</startdate><enddate>20141106</enddate><creator>Brandão, J</creator><creator>Novak, R L</creator><creator>Lozano, H</creator><creator>Soledade, P R</creator><creator>Mello, A</creator><creator>Garcia, F</creator><creator>Sampaio, L C</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>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20141106</creationdate><title>Magnetic vortex chirality switching in Permalloy nanowires with asymmetric notches</title><author>Brandão, J ; Novak, R L ; Lozano, H ; Soledade, P R ; Mello, A ; Garcia, F ; Sampaio, L C</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a519-a71803171c661ecfecd7ab56178159de84bbd15be2e6d3d09c6bd6b7ac16d0f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Chirality</topic><topic>Configurations</topic><topic>Domain walls</topic><topic>Exit angle</topic><topic>Ferrous alloys</topic><topic>Kerr magnetooptical effect</topic><topic>Magnetic alloys</topic><topic>Nanowires</topic><topic>Notches</topic><topic>Physics - Mesoscale and Nanoscale Physics</topic><topic>Vortices</topic><toplevel>online_resources</toplevel><creatorcontrib>Brandão, J</creatorcontrib><creatorcontrib>Novak, R L</creatorcontrib><creatorcontrib>Lozano, H</creatorcontrib><creatorcontrib>Soledade, P R</creatorcontrib><creatorcontrib>Mello, A</creatorcontrib><creatorcontrib>Garcia, F</creatorcontrib><creatorcontrib>Sampaio, L C</creatorcontrib><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central</collection><collection>ProQuest Central Essentials</collection><collection>AUTh Library subscriptions: ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Publicly Available Content (ProQuest)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</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>Brandão, J</au><au>Novak, R L</au><au>Lozano, H</au><au>Soledade, P R</au><au>Mello, A</au><au>Garcia, F</au><au>Sampaio, L C</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Magnetic vortex chirality switching in Permalloy nanowires with asymmetric notches</atitle><jtitle>arXiv.org</jtitle><date>2014-11-06</date><risdate>2014</risdate><eissn>2331-8422</eissn><abstract>We have investigated the motion of vortex domain walls passing across non symmetric triangular notches in single Permalloy nanowires. 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| subjects | Chirality Configurations Domain walls Exit angle Ferrous alloys Kerr magnetooptical effect Magnetic alloys Nanowires Notches Physics - Mesoscale and Nanoscale Physics Vortices |
| title | Magnetic vortex chirality switching in Permalloy nanowires with asymmetric notches |
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