DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Jeong-Mok | ko |
dc.contributor.author | Kim, Seok-Jong | ko |
dc.contributor.author | Kang, Min-Gu | ko |
dc.contributor.author | Choi, Jong-Guk | ko |
dc.contributor.author | Lee, Soogil | ko |
dc.contributor.author | Park, Jaehyeon | ko |
dc.contributor.author | Cao Van Phuoc | ko |
dc.contributor.author | Kim, Kyoung-Whan | ko |
dc.contributor.author | Kim, Kab-Jin | ko |
dc.contributor.author | Jeong, Jong-Ryul | ko |
dc.contributor.author | Lee, Kyung-Jin | ko |
dc.contributor.author | Park, Byong-Guk | ko |
dc.date.accessioned | 2023-07-03T09:00:24Z | - |
dc.date.available | 2023-07-03T09:00:24Z | - |
dc.date.created | 2023-07-03 | - |
dc.date.created | 2023-07-03 | - |
dc.date.created | 2023-07-03 | - |
dc.date.issued | 2023-06 | - |
dc.identifier.citation | NATURE COMMUNICATIONS, v.14, no.1 | - |
dc.identifier.issn | 2041-1723 | - |
dc.identifier.uri | http://hdl.handle.net/10203/310218 | - |
dc.description.abstract | Spin Seebeck effect (SSE) refers to the generation of an electric voltage transverse to a temperature gradient via a magnon current. SSE offers the potential for efficient thermoelectric devices because the transverse geometry of SSE enables to utilize waste heat from a large-area source by greatly simplifying the device structure. However, SSE suffers from a low thermoelectric conversion efficiency that must be improved for widespread application. Here we show that the SSE substantially enhances by oxidizing a ferromagnet in normal metal/ferromagnet/oxide structures. In W/CoFeB/AlOx structures, voltage-induced interfacial oxidation of CoFeB modifies the SSE, resulting in the enhancement of thermoelectric signal by an order of magnitude. We describe a mechanism for the enhancement that results from a reduced exchange interaction of the oxidized region of ferromagnet, which in turn increases a temperature difference between magnons in the ferromagnet and electrons in the normal metal and/or a gradient of magnon chemical potential in the ferromagnet. Our result will invigorate research for thermoelectric conversion by suggesting a promising way of improving the SSE efficiency. | - |
dc.language | English | - |
dc.publisher | NATURE PORTFOLIO | - |
dc.title | Enhanced spin Seebeck effect via oxygen manipulation | - |
dc.type | Article | - |
dc.identifier.wosid | 001047512000032 | - |
dc.identifier.scopusid | 2-s2.0-85161471274 | - |
dc.type.rims | ART | - |
dc.citation.volume | 14 | - |
dc.citation.issue | 1 | - |
dc.citation.publicationname | NATURE COMMUNICATIONS | - |
dc.identifier.doi | 10.1038/s41467-023-39116-x | - |
dc.contributor.localauthor | Kim, Kab-Jin | - |
dc.contributor.localauthor | Lee, Kyung-Jin | - |
dc.contributor.localauthor | Park, Byong-Guk | - |
dc.contributor.nonIdAuthor | Lee, Soogil | - |
dc.contributor.nonIdAuthor | Cao Van Phuoc | - |
dc.contributor.nonIdAuthor | Kim, Kyoung-Whan | - |
dc.contributor.nonIdAuthor | Jeong, Jong-Ryul | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
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