Thermoelectric performance of a metastable thin-film Heusler alloy

doi:10.1038/s41586-019-1751-9

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	Thermoelectric performance of a metastable thin-film Heusler alloy
	Hinterleitner, B.1,3; Knapp, I.1,3; Poneder, M.1,3; Shi, Yongpeng 2,4; Mueller, H.1; Eguchi, G.1; Eisenmenger-Sittner, C.1; Stoeger-Pollach, M.1,5; Kakefuda, Y.6; Kawamoto, N.6
刊名	NATURE
	2019-12-05
卷号	576 期号:7785 页码:85-+
ISSN号	0028-0836
DOI	10.1038/s41586-019-1751-9
通讯作者	Bauer, E.(bauer@ifp.tuwien.ac.at)
英文摘要	Thermoelectric materials transform a thermal gradient into electricity. The efficiency of this process relies on three material-dependent parameters:the Seebeck coefficient, the electrical resistivity and the thermal conductivity, summarized in the thermoelectric figure of merit. A large figure of merit is beneficial for potential applications such as thermoelectric generators. Here we report the thermal and electronic properties of thin-film Heusler alloys based on Fe2V0.8W0.2Al prepared by magnetron sputtering. Density functional theory calculations suggest that the thin films are metastable states, and measurements oft he power factor-the ratio of the Seebeck coefficient squared divided by the electrical resistivity-suggest a high intrinsic figure of merit for these thin films. This may arise from a large differential density of states at the Fermi level and a Weyl-like electron dispersion close to the Fermi level, which indicates a high mobility of charge carriers owing to linear crossing in the electronic bands.
资助项目	Christian Doppler Laboratory for Thermoelectricity ; JST, CREST[JPMJCR15Q6] ; JST, CREST[JPMJCR19Q4] ; National Science Fund for Distinguished Young Scholars[51725103] ; National Natural Science Foundation of China[51671193] ; Science Challenging Project[TZ2016004] ; Shanghai Nuclear Engineering Research & Design Institute[2018ZX06002004]
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000501599200045
资助机构	Christian Doppler Laboratory for Thermoelectricity ; JST, CREST ; National Science Fund for Distinguished Young Scholars ; National Natural Science Foundation of China ; Science Challenging Project ; Shanghai Nuclear Engineering Research & Design Institute
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/136246]
专题	金属研究所_中国科学院金属研究所
通讯作者	Bauer, E.
作者单位	1.Tech Univ Wien, Inst Solid State Phys, Vienna, Austria 2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang, Liaoning, Peoples R China 3.Tech Univ Wien, Christian Doppler Lab Thermoelect, Vienna, Austria 4.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Liaoning, Peoples R China 5.Tech Univ Wien, Univ Serv Ctr Transmiss Electron Microscopy, Vienna, Austria 6.NIMS, Int Ctr Mat Nanoarchitecton WPI MANA, Tsukuba, Ibaraki, Japan 7.NIMS, CFSN, Tsukuba, Ibaraki, Japan 8.Univ Tsukuba, Tsukuba, Ibaraki, Japan
推荐引用方式 GB/T 7714	Hinterleitner, B.,Knapp, I.,Poneder, M.,et al. Thermoelectric performance of a metastable thin-film Heusler alloy[J]. NATURE,2019,576(7785):85-+.
APA	Hinterleitner, B..,Knapp, I..,Poneder, M..,Shi, Yongpeng.,Mueller, H..,...&Bauer, E..(2019).Thermoelectric performance of a metastable thin-film Heusler alloy.NATURE,576(7785),85-+.
MLA	Hinterleitner, B.,et al."Thermoelectric performance of a metastable thin-film Heusler alloy".NATURE 576.7785(2019):85-+.