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()
	2021-08-23
发表期刊	Journal of Physics D: Applied Physics
ISSN	0022-3727
卷号	54 期号:45
摘要	Abstract 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
DOI	10.1088/1361-6463/ac1cb6
语种	英语
WOS记录号	IOP:0022-3727-54-45-ac1cb6
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/166706
专题	中国科学院金属研究所
通讯作者	Mao,Zhiqiang
作者单位	1.Department of Physics, Pennsylvania State University, University Park, PA 16802, United States of America 2.Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA 16802, United States of America 3.2D Crystal Consortium, Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, United States of America 4.Department of Physics and Engineering Physics, Tulane University, New Orleans, LA 70118, United States of America 5.Superalloys Division, Institute of Metal Research, Chinese Academy of Sciences, 110016 Shenyang, People’s Republic of China
推荐引用方式 GB/T 7714	Robinson,Robert A.,Min,Lujin,Lee,Seng Huat,等. Large violation of the Wiedemann–Franz law in Heusler, ferromagnetic, Weyl semimetal Co2MnAl[J]. Journal of Physics D: Applied Physics,2021,54(45).
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).
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).