Large violation of the Wiedemann-Franz law in Heusler, ferromagnetic, Weyl semimetal Co2MnAl

doi:10.1088/1361-6463/ac1cb6

IMR OpenIR

	Large violation of the Wiedemann-Franz law in Heusler, ferromagnetic, Weyl semimetal Co2MnAl
	Robinson, Robert A.1; Min, Lujin 2; Lee, Seng Huat 3; Li, Peigang 4; Wang, Yu 1,3; Li, Jinguo 5; Mao, Zhiqiang 1,3
通讯作者	Mao, Zhiqiang(zim1@psu.edu)
	2021-11-11
发表期刊	JOURNAL OF PHYSICS D-APPLIED PHYSICS
ISSN	0022-3727
卷号	54 期号:45 页码:8
摘要	The Wiedemann-Franz (WF) law relates the electronic component of the thermal conductivity to the electrical conductivity in metals through the Lorenz number. The WF law has proven to be remarkably robust, however violations have been observed in many topological materials. In this work, we report thermoelectric measurements conducted on Heusler, ferromagnetic, Weyl semimetal Co2MnAl which shows a drastic, temperature dependent violation of the WF law below 300 K. We then discuss our result in the context of known physical explanations for WF law violation. Both the magnitude and temperature dependence of the violation in Co2MnAl are extreme, indicating that there may be more than one effect contributing to the violation in this system.
关键词	Wiedemann-Franz law Heusler alloy topological Weyl semimetal thermoelectric Wiedemann-Franz law violation ferromagnet
资助者	US National Science Foundation
DOI	10.1088/1361-6463/ac1cb6
收录类别	SCI
语种	英语
资助项目	US National Science Foundation[DMR 1917579] ; US National Science Foundation[1832031]
WOS研究方向	Physics
WOS类目	Physics, Applied
WOS记录号	WOS:000687396300001
出版者	IOP PUBLISHING LTD
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/159257
专题	中国科学院金属研究所
通讯作者	Mao, Zhiqiang
作者单位	1.Penn State Univ, Dept Phys, University Pk, PA 16802 USA 2.Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA 3.Penn State Univ, Mat Res Inst, 2D Crystal Consortium, University Pk, PA 16802 USA 4.Tulane Univ, Dept Phys & Engn Phys, New Orleans, LA 70118 USA 5.Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Robinson, Robert A.,Min, Lujin,Lee, Seng Huat,et al. Large violation of the Wiedemann-Franz law in Heusler, ferromagnetic, Weyl semimetal Co2MnAl[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS,2021,54(45):8.
APA	Robinson, Robert A..,Min, Lujin.,Lee, Seng Huat.,Li, Peigang.,Wang, Yu.,...&Mao, Zhiqiang.(2021).Large violation of the Wiedemann-Franz law in Heusler, ferromagnetic, Weyl semimetal Co2MnAl.JOURNAL OF PHYSICS D-APPLIED PHYSICS,54(45),8.
MLA	Robinson, Robert A.,et al."Large violation of the Wiedemann-Franz law in Heusler, ferromagnetic, Weyl semimetal Co2MnAl".JOURNAL OF PHYSICS D-APPLIED PHYSICS 54.45(2021):8.