Weyl Semimetal States Generated Extraordinary Quasi-Linear Magnetoresistance and Nernst Thermoelectric Power Factor in Polycrystalline NbP

doi:10.1002/adfm.202202143

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	Weyl Semimetal States Generated Extraordinary Quasi-Linear Magnetoresistance and Nernst Thermoelectric Power Factor in Polycrystalline NbP
	Liu, Wei 1; Wang, Zhaohui 1; Wang, Jinhua 2,3; Bai, Hui 1; Li, Zhi 1; Sun, Jinchang 1; Zhou, Xingyuan 1; Luo, Jiangfan 1; Wang, Wei 1; Zhang, Cheng 1
刊名	ADVANCED FUNCTIONAL MATERIALS
	2022-04-21
页码	10
关键词	NbP Nernst thermoelectric power factor polycrystalline quasi-linear magnetoresistance Weyl semimetal states
ISSN号	1616-301X
DOI	10.1002/adfm.202202143
通讯作者	Tang, Xinfeng(tangxf@whut.edu.cn)
英文摘要	Unsaturated and extremely large magnetoresistance (MR), as well as the giant Nernst effect, are intriguing transport phenomena in Weyl semimetals, which are technically appealing for potential applications in magneto-electric sensors and transverse thermoelectric conversion. The prominent properties are originated from Weyl semimetal states, i.e., the coexistence of electron and hole pockets combined with linear band dispersion. However, previous studies have been focused on small-sized single crystals, rendering the practical applications of Weyl semimetals. Here, it is reported an unsaturated, quasi-linear MR as well as a very large Nernst power factor PFxy in the prepared centimeter-sized and polycrystalline Weyl semimetal NbP. An extraordinary MR of approximate to 2 x 10(4)% is observed below 60 K with a magnetic field up to 55 T and persists to elevated temperatures. The unusual quasi-linear MR behavior is explained by the theory of classical linear MR arising from structural disorder. The polycrystalline NbP exhibits state-of-the-art PFxy that reaches a maximum value of 74.81 mu W cm(-1) K-2 at 9 T and 220 K, which is 1.5 times larger than its longitudinal thermoelectric power factor PFxx. Given that polycrystalline Weyl semimetal, NbP is suitable for large-scale production, the results pave the way for its practical applications in magneto-electric sensors and transverse thermoelectric conversion.
资助项目	National Key Research and Development Program of China[2019YFA0704900] ; Natural Science Foundation of China[91963120] ; Natural Science Foundation of China[52150710537] ; Natural Science Foundation of China[12004123] ; Fundamental Research Funds for the Central Universities[WUT: 2021III016GX]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000789584100001
资助机构	National Key Research and Development Program of China ; Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/172488]
专题	金属研究所_中国科学院金属研究所
通讯作者	Tang, Xinfeng
作者单位	1.Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China 2.Huazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Peoples R China 3.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Liu, Wei,Wang, Zhaohui,Wang, Jinhua,et al. Weyl Semimetal States Generated Extraordinary Quasi-Linear Magnetoresistance and Nernst Thermoelectric Power Factor in Polycrystalline NbP[J]. ADVANCED FUNCTIONAL MATERIALS,2022:10.
APA	Liu, Wei.,Wang, Zhaohui.,Wang, Jinhua.,Bai, Hui.,Li, Zhi.,...&Tang, Xinfeng.(2022).Weyl Semimetal States Generated Extraordinary Quasi-Linear Magnetoresistance and Nernst Thermoelectric Power Factor in Polycrystalline NbP.ADVANCED FUNCTIONAL MATERIALS,10.
MLA	Liu, Wei,et al."Weyl Semimetal States Generated Extraordinary Quasi-Linear Magnetoresistance and Nernst Thermoelectric Power Factor in Polycrystalline NbP".ADVANCED FUNCTIONAL MATERIALS (2022):10.