Influence of yttrium iron garnet thickness and heater opacity on the nonlocal transport of electrically and thermally excited magnons
We studied the nonlocal transport behavior of both electrically and thermally excited magnons in yttrium iron garnet (YIG) as a function of its thickness. For electrically injected magnons, the nonlocal signals decrease monotonically as the YIG thickness increases. For the nonlocal behavior of the t...
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| Veröffentlicht in: | Physical review. B 2016-11, Vol.94 (17), Article 174437 |
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| creator | Shan, Juan Cornelissen, Ludo J. Vlietstra, Nynke Ben Youssef, Jamal Kuschel, Timo Duine, Rembert A. van Wees, Bart J. |
| description | We studied the nonlocal transport behavior of both electrically and thermally excited magnons in yttrium iron garnet (YIG) as a function of its thickness. For electrically injected magnons, the nonlocal signals decrease monotonically as the YIG thickness increases. For the nonlocal behavior of the thermally generated magnons, or the nonlocal spin Seebeck effect (SSE), we observed a sign reversal which occurs at a certain heater-detector distance, and it is influenced by both the opacity of the YIG/heater interface and the YIG thickness. Our nonlocal SSE results can be qualitatively explained by the bulk-driven SSE mechanism together with the magnon diffusion model. Using a two-dimensional finite element model (2D-FEM), we estimated the bulk spin Seebeck coefficient of YIG at room temperature. The quantitative disagreement between the experimental and modeled results indicates more complex processes going on in addition to magnon diffusion and relaxation, especially close to the contacts. |
| doi_str_mv | 10.1103/PhysRevB.94.174437 |
| format | Article |
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For electrically injected magnons, the nonlocal signals decrease monotonically as the YIG thickness increases. For the nonlocal behavior of the thermally generated magnons, or the nonlocal spin Seebeck effect (SSE), we observed a sign reversal which occurs at a certain heater-detector distance, and it is influenced by both the opacity of the YIG/heater interface and the YIG thickness. Our nonlocal SSE results can be qualitatively explained by the bulk-driven SSE mechanism together with the magnon diffusion model. Using a two-dimensional finite element model (2D-FEM), we estimated the bulk spin Seebeck coefficient of YIG at room temperature. The quantitative disagreement between the experimental and modeled results indicates more complex processes going on in addition to magnon diffusion and relaxation, especially close to the contacts.</description><identifier>ISSN: 2469-9950</identifier><identifier>EISSN: 2469-9969</identifier><identifier>DOI: 10.1103/PhysRevB.94.174437</identifier><language>eng</language><publisher>College Park: American Physical Society</publisher><subject>Electric contacts ; Finite element method ; Iron ; Magnons ; Mathematical models ; Opacity ; Seebeck effect ; Thickness ; Transport ; Two dimensional models ; Yttrium ; Yttrium-iron garnet</subject><ispartof>Physical review. 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The quantitative disagreement between the experimental and modeled results indicates more complex processes going on in addition to magnon diffusion and relaxation, especially close to the contacts.</description><subject>Electric contacts</subject><subject>Finite element method</subject><subject>Iron</subject><subject>Magnons</subject><subject>Mathematical models</subject><subject>Opacity</subject><subject>Seebeck effect</subject><subject>Thickness</subject><subject>Transport</subject><subject>Two dimensional models</subject><subject>Yttrium</subject><subject>Yttrium-iron garnet</subject><issn>2469-9950</issn><issn>2469-9969</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNo9kF1LwzAYhYsoOOb-gFcBrzfz1aS91OHHYKCIXpc0fbN2dklNUrE_wP9tt6lX7wfPOQdOklwSvCAEs-vneggv8Hm7yPmCSM6ZPEkmlIt8nuciP_3fU3yezELYYoyJwLnE-ST5XlnT9mA1IGfQEKNv-h1qvLNoo7yFiGLd6HcLISBlK1SDiuCR65Ru4oBGLNaArLOt06pF0SsbOufj3g1a0KPf-G-Hg3hE_e5wwdcohwrt1GbUhovkzKg2wOx3TpO3-7vX5eN8_fSwWt6s55ozHucVTmXFK1ESYUylDRcpiIyWUkglSk0l46xKqc5ImjJBTIYpVFQRmWUGl6Vk0-Tq6Nt599FDiMXW9d6OkQUlVKRpxhgZKXqktHcheDBF55ud8kNBcLFvvPhrvMh5cWyc_QDHU3jA</recordid><startdate>20161123</startdate><enddate>20161123</enddate><creator>Shan, Juan</creator><creator>Cornelissen, Ludo J.</creator><creator>Vlietstra, Nynke</creator><creator>Ben Youssef, Jamal</creator><creator>Kuschel, Timo</creator><creator>Duine, Rembert A.</creator><creator>van Wees, Bart J.</creator><general>American Physical Society</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>H8D</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20161123</creationdate><title>Influence of yttrium iron garnet thickness and heater opacity on the nonlocal transport of electrically and thermally excited magnons</title><author>Shan, Juan ; Cornelissen, Ludo J. ; Vlietstra, Nynke ; Ben Youssef, Jamal ; Kuschel, Timo ; Duine, Rembert A. ; van Wees, Bart J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c434t-d057d4d6b16ffdcf465e682b767a6bc27343d52c8155361f802ed2a1788f0bb73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Electric contacts</topic><topic>Finite element method</topic><topic>Iron</topic><topic>Magnons</topic><topic>Mathematical models</topic><topic>Opacity</topic><topic>Seebeck effect</topic><topic>Thickness</topic><topic>Transport</topic><topic>Two dimensional models</topic><topic>Yttrium</topic><topic>Yttrium-iron garnet</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Shan, Juan</creatorcontrib><creatorcontrib>Cornelissen, Ludo J.</creatorcontrib><creatorcontrib>Vlietstra, Nynke</creatorcontrib><creatorcontrib>Ben Youssef, Jamal</creatorcontrib><creatorcontrib>Kuschel, Timo</creatorcontrib><creatorcontrib>Duine, Rembert A.</creatorcontrib><creatorcontrib>van Wees, Bart J.</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physical review. B</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Shan, Juan</au><au>Cornelissen, Ludo J.</au><au>Vlietstra, Nynke</au><au>Ben Youssef, Jamal</au><au>Kuschel, Timo</au><au>Duine, Rembert A.</au><au>van Wees, Bart J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of yttrium iron garnet thickness and heater opacity on the nonlocal transport of electrically and thermally excited magnons</atitle><jtitle>Physical review. B</jtitle><date>2016-11-23</date><risdate>2016</risdate><volume>94</volume><issue>17</issue><artnum>174437</artnum><issn>2469-9950</issn><eissn>2469-9969</eissn><abstract>We studied the nonlocal transport behavior of both electrically and thermally excited magnons in yttrium iron garnet (YIG) as a function of its thickness. For electrically injected magnons, the nonlocal signals decrease monotonically as the YIG thickness increases. For the nonlocal behavior of the thermally generated magnons, or the nonlocal spin Seebeck effect (SSE), we observed a sign reversal which occurs at a certain heater-detector distance, and it is influenced by both the opacity of the YIG/heater interface and the YIG thickness. Our nonlocal SSE results can be qualitatively explained by the bulk-driven SSE mechanism together with the magnon diffusion model. Using a two-dimensional finite element model (2D-FEM), we estimated the bulk spin Seebeck coefficient of YIG at room temperature. The quantitative disagreement between the experimental and modeled results indicates more complex processes going on in addition to magnon diffusion and relaxation, especially close to the contacts.</abstract><cop>College Park</cop><pub>American Physical Society</pub><doi>10.1103/PhysRevB.94.174437</doi><oa>free_for_read</oa></addata></record> |
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| source | American Physical Society Journals |
| subjects | Electric contacts Finite element method Iron Magnons Mathematical models Opacity Seebeck effect Thickness Transport Two dimensional models Yttrium Yttrium-iron garnet |
| title | Influence of yttrium iron garnet thickness and heater opacity on the nonlocal transport of electrically and thermally excited magnons |
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