| Large violation of the Wiedemann-Franz law in Heusler, ferromagnetic, Weyl semimetal Co2MnAl | |
| Robinson, Robert A.1; Min, Lujin2; Lee, Seng Huat3; Li, Peigang4; Wang, Yu1,3; Li, Jinguo5; Mao, Zhiqiang1,3 | |
| Corresponding Author | Mao, Zhiqiang(zim1@psu.edu) |
| 2021-11-11 | |
| Source Publication | JOURNAL OF PHYSICS D-APPLIED PHYSICS
 |
| ISSN | 0022-3727 |
| Volume | 54Issue:45Pages:8 |
| 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. |
| Keyword | Wiedemann-Franz law Heusler alloy topological Weyl semimetal thermoelectric Wiedemann-Franz law violation ferromagnet |
| Funding Organization | US National Science Foundation |
| DOI | 10.1088/1361-6463/ac1cb6 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | US National Science Foundation[DMR 1917579] ; US National Science Foundation[1832031] |
| WOS Research Area | Physics |
| WOS Subject | Physics, Applied |
| WOS ID | WOS:000687396300001 |
| Publisher | IOP PUBLISHING LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/159257 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Mao, Zhiqiang |
| Affiliation | 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 |
| Recommended Citation 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. |
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