Unambiguous separation of the inverse spin Hall and anomalous Nernst effects within a ferromagnetic metal using the spin Seebeck effect
The longitudinal spin Seebeck effect is measured on the ferromagnetic insulator Fe3O4 with the ferromagnetic metal Co0.2Fe0.6B0.2 (CoFeB) as the spin detector. By using a non-magnetic spacer material between the two materials (Ti), it is possible to decouple the two ferromagnetic materials and direc...
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| Veröffentlicht in: | Applied physics letters 2014-09, Vol.105 (9) |
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| creator | Wu, Stephen M. Hoffman, Jason Pearson, John E. Bhattacharya, Anand |
| description | The longitudinal spin Seebeck effect is measured on the ferromagnetic insulator Fe3O4 with the ferromagnetic metal Co0.2Fe0.6B0.2 (CoFeB) as the spin detector. By using a non-magnetic spacer material between the two materials (Ti), it is possible to decouple the two ferromagnetic materials and directly observe pure spin flow from Fe3O4 into CoFeB. It is shown that in a single ferromagnetic metal, the inverse spin Hall effect (ISHE) and anomalous Nernst effect (ANE) can occur simultaneously with opposite polarity. Using this and the large difference in the coercive fields between the two magnets, it is possible to unambiguously separate the contributions of the spin Seebeck effect from the ANE and observe the degree to which each effect contributes to the total response. These experiments show conclusively that the ISHE and ANE in CoFeB are separate phenomena with different origins and can coexist in the same material with opposite response to a thermal gradient. |
| doi_str_mv | 10.1063/1.4895034 |
| format | Article |
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(ANL), Argonne, IL (United States)</creatorcontrib><description>The longitudinal spin Seebeck effect is measured on the ferromagnetic insulator Fe3O4 with the ferromagnetic metal Co0.2Fe0.6B0.2 (CoFeB) as the spin detector. By using a non-magnetic spacer material between the two materials (Ti), it is possible to decouple the two ferromagnetic materials and directly observe pure spin flow from Fe3O4 into CoFeB. It is shown that in a single ferromagnetic metal, the inverse spin Hall effect (ISHE) and anomalous Nernst effect (ANE) can occur simultaneously with opposite polarity. Using this and the large difference in the coercive fields between the two magnets, it is possible to unambiguously separate the contributions of the spin Seebeck effect from the ANE and observe the degree to which each effect contributes to the total response. These experiments show conclusively that the ISHE and ANE in CoFeB are separate phenomena with different origins and can coexist in the same material with opposite response to a thermal gradient.</description><identifier>ISSN: 0003-6951</identifier><identifier>EISSN: 1077-3118</identifier><identifier>DOI: 10.1063/1.4895034</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Applied physics ; Coercive force ; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ; Ferromagnetic materials ; Hall effect ; Heaters ; Iron oxides ; Magnets ; MATERIALS SCIENCE ; Nernst-Ettingshausen effect ; Polarity ; Seebeck effect ; Thermoelectric effects ; Titanium</subject><ispartof>Applied physics letters, 2014-09, Vol.105 (9)</ispartof><rights>2014 AIP Publishing LLC.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c385t-74e07c5bad8f7d45dc94c07b3f5a5218dd3e5bb875556b5317ac8f93db8b44563</citedby><cites>FETCH-LOGICAL-c385t-74e07c5bad8f7d45dc94c07b3f5a5218dd3e5bb875556b5317ac8f93db8b44563</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,27901,27902</link.rule.ids><backlink>$$Uhttps://www.osti.gov/servlets/purl/1356623$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Wu, Stephen M.</creatorcontrib><creatorcontrib>Hoffman, Jason</creatorcontrib><creatorcontrib>Pearson, John E.</creatorcontrib><creatorcontrib>Bhattacharya, Anand</creatorcontrib><creatorcontrib>Argonne National Lab. (ANL), Argonne, IL (United States)</creatorcontrib><title>Unambiguous separation of the inverse spin Hall and anomalous Nernst effects within a ferromagnetic metal using the spin Seebeck effect</title><title>Applied physics letters</title><description>The longitudinal spin Seebeck effect is measured on the ferromagnetic insulator Fe3O4 with the ferromagnetic metal Co0.2Fe0.6B0.2 (CoFeB) as the spin detector. By using a non-magnetic spacer material between the two materials (Ti), it is possible to decouple the two ferromagnetic materials and directly observe pure spin flow from Fe3O4 into CoFeB. It is shown that in a single ferromagnetic metal, the inverse spin Hall effect (ISHE) and anomalous Nernst effect (ANE) can occur simultaneously with opposite polarity. Using this and the large difference in the coercive fields between the two magnets, it is possible to unambiguously separate the contributions of the spin Seebeck effect from the ANE and observe the degree to which each effect contributes to the total response. These experiments show conclusively that the ISHE and ANE in CoFeB are separate phenomena with different origins and can coexist in the same material with opposite response to a thermal gradient.</description><subject>Applied physics</subject><subject>Coercive force</subject><subject>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</subject><subject>Ferromagnetic materials</subject><subject>Hall effect</subject><subject>Heaters</subject><subject>Iron oxides</subject><subject>Magnets</subject><subject>MATERIALS SCIENCE</subject><subject>Nernst-Ettingshausen effect</subject><subject>Polarity</subject><subject>Seebeck effect</subject><subject>Thermoelectric effects</subject><subject>Titanium</subject><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNotkUFPAyEQhYnRxFo9-A-InjxshbIs26Np1JoYPahnAuzQoluowGr8Bf5tse1hMpnkey8v8xA6p2RCScOu6aRuZ5yw-gCNKBGiYpS2h2hECGFVM-P0GJ2k9F5OPmVshH7fvFprtxzCkHCCjYoqu-BxsDivADv_BTEBThvn8UL1PVa-KxPWqv9XPEH0KWOwFkxO-NvlVQEVthBjYZYesjN4DVn1eEjOL7euW7cXAA3mY689RUdW9QnO9nuM3u5uX-eL6vH5_mF-81gZ1vJciRqIMFyrrrWiq3lnZrUhQjPLFZ_StusYcK1bwTlvNGdUKNPaGet0q-uaN2yMLna-IWUnk3EZzMoE70sGSRlvmvKWMbrcQZsYPgdIWb6HIfqSS07ptOFN-bQo1NWOMjGkFMHKTXRrFX8kJfK_DEnlvgz2B3oofTk</recordid><startdate>20140901</startdate><enddate>20140901</enddate><creator>Wu, Stephen M.</creator><creator>Hoffman, Jason</creator><creator>Pearson, John E.</creator><creator>Bhattacharya, Anand</creator><general>American Institute of Physics</general><general>American Institute of Physics (AIP)</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>OIOZB</scope><scope>OTOTI</scope></search><sort><creationdate>20140901</creationdate><title>Unambiguous separation of the inverse spin Hall and anomalous Nernst effects within a ferromagnetic metal using the spin Seebeck effect</title><author>Wu, Stephen M. ; Hoffman, Jason ; Pearson, John E. ; Bhattacharya, Anand</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c385t-74e07c5bad8f7d45dc94c07b3f5a5218dd3e5bb875556b5317ac8f93db8b44563</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Applied physics</topic><topic>Coercive force</topic><topic>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</topic><topic>Ferromagnetic materials</topic><topic>Hall effect</topic><topic>Heaters</topic><topic>Iron oxides</topic><topic>Magnets</topic><topic>MATERIALS SCIENCE</topic><topic>Nernst-Ettingshausen effect</topic><topic>Polarity</topic><topic>Seebeck effect</topic><topic>Thermoelectric effects</topic><topic>Titanium</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wu, Stephen M.</creatorcontrib><creatorcontrib>Hoffman, Jason</creatorcontrib><creatorcontrib>Pearson, John E.</creatorcontrib><creatorcontrib>Bhattacharya, Anand</creatorcontrib><creatorcontrib>Argonne National Lab. (ANL), Argonne, IL (United States)</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><jtitle>Applied physics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wu, Stephen M.</au><au>Hoffman, Jason</au><au>Pearson, John E.</au><au>Bhattacharya, Anand</au><aucorp>Argonne National Lab. (ANL), Argonne, IL (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Unambiguous separation of the inverse spin Hall and anomalous Nernst effects within a ferromagnetic metal using the spin Seebeck effect</atitle><jtitle>Applied physics letters</jtitle><date>2014-09-01</date><risdate>2014</risdate><volume>105</volume><issue>9</issue><issn>0003-6951</issn><eissn>1077-3118</eissn><abstract>The longitudinal spin Seebeck effect is measured on the ferromagnetic insulator Fe3O4 with the ferromagnetic metal Co0.2Fe0.6B0.2 (CoFeB) as the spin detector. By using a non-magnetic spacer material between the two materials (Ti), it is possible to decouple the two ferromagnetic materials and directly observe pure spin flow from Fe3O4 into CoFeB. It is shown that in a single ferromagnetic metal, the inverse spin Hall effect (ISHE) and anomalous Nernst effect (ANE) can occur simultaneously with opposite polarity. Using this and the large difference in the coercive fields between the two magnets, it is possible to unambiguously separate the contributions of the spin Seebeck effect from the ANE and observe the degree to which each effect contributes to the total response. These experiments show conclusively that the ISHE and ANE in CoFeB are separate phenomena with different origins and can coexist in the same material with opposite response to a thermal gradient.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4895034</doi><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Applied physics Coercive force CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY Ferromagnetic materials Hall effect Heaters Iron oxides Magnets MATERIALS SCIENCE Nernst-Ettingshausen effect Polarity Seebeck effect Thermoelectric effects Titanium |
| title | Unambiguous separation of the inverse spin Hall and anomalous Nernst effects within a ferromagnetic metal using the spin Seebeck effect |
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