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dc.contributor.author | Zhang, Yuqiao | en |
dc.contributor.author | Feng, Bin | en |
dc.contributor.author | Hayashi, Hiroyuki | en |
dc.contributor.author | Chang, Cheng-Ping | en |
dc.contributor.author | Sheu, Yu-Miin | en |
dc.contributor.author | Tanaka, Isao | en |
dc.contributor.author | Ikuhara, Yuichi | en |
dc.contributor.author | Ohta, Hiromichi | en |
dc.contributor.alternative | 張, 雨橋 | ja |
dc.contributor.alternative | 林, 博之 | ja |
dc.contributor.alternative | 田中, 功 | ja |
dc.contributor.alternative | 幾原, 雄一 | ja |
dc.contributor.alternative | 太田, 裕道 | ja |
dc.date.accessioned | 2018-07-10T08:34:24Z | - |
dc.date.available | 2018-07-10T08:34:24Z | - |
dc.date.issued | 2018-06-20 | - |
dc.identifier.issn | 2041-1723 | - |
dc.identifier.uri | http://hdl.handle.net/2433/232619 | - |
dc.description | 電子をギュッと閉じ込めて熱電材料の性能を倍増 --熱電材料を高性能化する理論を実証--. 京都大学プレスリリース. 2018-07-10. | ja |
dc.description.abstract | Two-dimensional electron systems have attracted attention as thermoelectric materials, which can directly convert waste heat into electricity. It has been theoretically predicted that thermoelectric power factor can be largely enhanced when the two-dimensional electron layer is far narrower than the de Broglie wavelength. Although many studies have been made, the effectiveness has not been experimentally clarified thus far. Here we experimentally clarify that an enhanced two-dimensionality is efficient to enhance thermoelectric power factor. We fabricated superlattices of [N unit cell SrTi1−xNb x O3|11 unit cell SrTiO3]10—there are two different de Broglie wavelength in the SrTi1−xNb x O3 system. The maximum power factor of the superlattice composed of the longer de Broglie wavelength SrTi1−xNb x O3 exceeded ∼5 mW m−1 K−2, which doubles the value of optimized bulk SrTi1−xNb x O3. The present approach—use of longer de Broglie wavelength—is epoch-making and is fruitful to design good thermoelectric materials showing high power factor. | en |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Springer Nature | en |
dc.rights | © The Author(s) 2018. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. | en |
dc.subject | Electronic properties and materials | en |
dc.subject | Surfaces, interfaces and thin films | en |
dc.subject | Thermoelectric devices and materials | en |
dc.subject | Thermoelectrics | en |
dc.subject | Two-dimensional materials | en |
dc.title | Double thermoelectric power factor of a 2D electron system | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.jtitle | Nature Communications | en |
dc.identifier.volume | 9 | - |
dc.relation.doi | 10.1038/s41467-018-04660-4 | - |
dc.textversion | publisher | - |
dc.identifier.artnum | 2224 | - |
dc.identifier.pmid | 29925840 | - |
dc.relation.url | https://www.kyoto-u.ac.jp/ja/research-news/2018-07-10 | - |
dcterms.accessRights | open access | - |
datacite.awardNumber | 25106003 | - |
datacite.awardNumber | 25106005 | - |
datacite.awardNumber | 25106007 | - |
datacite.awardNumber | 17H01314 | - |
datacite.awardNumber | 26287064 | - |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName.alternative | Japan Society for the Promotion of Science (JSPS) | en |
jpcoar.funderName.alternative | Japan Society for the Promotion of Science (JSPS) | en |
jpcoar.funderName.alternative | Japan Society for the Promotion of Science (JSPS) | en |
jpcoar.funderName.alternative | Japan Society for the Promotion of Science (JSPS) | en |
jpcoar.funderName.alternative | Japan Society for the Promotion of Science (JSPS) | en |
出現コレクション: | 学術雑誌掲載論文等 |
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