Large violation of the Wiedemann–Franz law in Heusler, ferromagnetic, Weyl semimetal Co2MnAl | |
Robinson,Robert A.2; Min,Lujin3; Lee,Seng Huat4; Li,Peigang5; Wang,Yu2,4; Li,Jinguo1; Mao,Zhiqiang2,4 | |
刊名 | Journal of Physics D: Applied Physics |
2021-08-23 | |
卷号 | 54期号:45 |
关键词 | Wiedemann–Franz law Heusler alloy topological Weyl semimetal thermoelectric Wiedemann–Franz law violation ferromagnet |
ISSN号 | 0022-3727 |
DOI | 10.1088/1361-6463/ac1cb6 |
通讯作者 | Mao,Zhiqiang() |
英文摘要 | 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. |
语种 | 英语 |
出版者 | IOP Publishing |
WOS记录号 | IOP:0022-3727-54-45-AC1CB6 |
内容类型 | 期刊论文 |
源URL | [http://ir.imr.ac.cn/handle/321006/166704] |
专题 | 金属研究所_中国科学院金属研究所 |
通讯作者 | Mao,Zhiqiang |
作者单位 | 1.Superalloys Division, Institute of Metal Research, Chinese Academy of Sciences, 110016 Shenyang, People’s Republic of China 2.Department of Physics, Pennsylvania State University, University Park, PA 16802, United States of America 3.Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA 16802, United States of America 4.2D Crystal Consortium, Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, United States of America 5.Department of Physics and Engineering Physics, Tulane University, New Orleans, LA 70118, United States of America |
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). |
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). |
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