中文版 | English
Title

Giant transverse thermoelectric effect induced by topological transition in polycrystalline Dirac semimetal Mg3Bi2

Author
Corresponding AuthorZhang, Wenqing; Liu, Qihang; Liu, Weishu
Publication Years
2023-02-01
DOI
Source Title
ISSN
1754-5692
EISSN
1754-5706
Abstract

To achieve thermoelectric energy conversion, a large transverse thermoelectric effect in topological materials is crucial. However, a simple and effective way to manipulate the performance of transverse thermoelectric materials still remains elusive. Herein, we demonstrate a topological transition-induced giant transverse thermoelectric effect in polycrystalline Mn-doped Mg3+delta Bi2 material, which has a competitively large transverse thermopower (617 mu V K-1), power factor (20 393 mu W m(-1) K-2), magnetoresistance (16 600%), and electronic mobility (35 280 cm(2) V-1 s(-1)). The high performance is triggered by the modulation of the negative chemical pressure and disorder effects in the presence of Mn doping, which induces the transition from a topological insulator to a Dirac semimetal. The high-performance polycrystalline Mn-doped Mg3+delta Bi2 described in this work robustly boosts the transverse thermoelectric effect through topological phase transition, paving a new avenue for the material design of transverse thermoelectricity.

URL[Source Record]
Indexed By
Language
English
SUSTech Authorship
First ; Corresponding
Funding Project
National Key R&D Program of China[2019YFA0704900] ; National Natural Science Foundation of China[51872133] ; Shenzhen Key Program for Long-Term Academic Support Plan[20200925164021002] ; Guangdong Innovative and Entrepreneurial Research Team Program[2017ZT07C062] ; Guangdong Provincial Key Laboratory Program[
WOS Research Area
Chemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology
WOS Subject
Chemistry, Multidisciplinary ; Energy & Fuels ; Engineering, Chemical ; Environmental Sciences
WOS Accession No
WOS:000939708300001
Publisher
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:2
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/501471
DepartmentDepartment of Materials Science and Engineering
理学院_物理系
量子科学与工程研究院
Affiliation
1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
4.Southern Univ Sci & Technol, Guangdong Prov Key Lab Funct Oxide Mat & Devices, Shenzhen 518055, Peoples R China
First Author AffilicationDepartment of Materials Science and Engineering
Corresponding Author AffilicationDepartment of Materials Science and Engineering;  Department of Physics;  Institute for Quantum Science and Engineering;  Southern University of Science and Technology
First Author's First AffilicationDepartment of Materials Science and Engineering
Recommended Citation
GB/T 7714
Feng, Tao,Wang, Panshuo,Han, Zhijia,et al. Giant transverse thermoelectric effect induced by topological transition in polycrystalline Dirac semimetal Mg3Bi2[J]. Energy & Environmental Science,2023.
APA
Feng, Tao.,Wang, Panshuo.,Han, Zhijia.,Zhou, Liang.,Wang, Zhiran.,...&Liu, Weishu.(2023).Giant transverse thermoelectric effect induced by topological transition in polycrystalline Dirac semimetal Mg3Bi2.Energy & Environmental Science.
MLA
Feng, Tao,et al."Giant transverse thermoelectric effect induced by topological transition in polycrystalline Dirac semimetal Mg3Bi2".Energy & Environmental Science (2023).
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