Thermoelectric Origin of Giant Nonreciprocal Charge Transport in NbAs Nanobelts

doi:10.1103/PhysRevApplied.15.034084

	Thermoelectric Origin of Giant Nonreciprocal Charge Transport in NbAs Nanobelts
	Zhang, Cheng 4,5,6; Yuan, Xiang 5,6,7; Zhang, Jinglei 1; Leng, Pengliang 5,6; Mou, Yicheng 4; Ni, Zhuoliang 5,6; Zhang, Hongming 5,6; Yu, Chenglin 5,6; Yang, Yunkun 5,6; Xiu, Faxian 2,3,4,5,6
刊名	PHYSICAL REVIEW APPLIED
	2021-03-29
卷号	15
ISSN号	2331-7019
DOI	10.1103/PhysRevApplied.15.034084
通讯作者	Zhang, Cheng(zhangcheng@fudan.edu.cn)
英文摘要	Recently, nonreciprocal charge transport has emerged as an important experimental tool for detecting symmetry breaking in noncentrosymmetric crystals. Despite extensive studies on systems with intrinsic symmetry breaking from crystal structures or interfaces, nonreciprocal transport induced by extrinsic mechanisms, such as the asymmetric design of device geometry, remains largely unexplored. Here, we show that a giant nonreciprocal resistance arises extrinsically from the thermoelectric effect due to nonuniform current heating in mesoscopic devices. Taking NbAs nanobelts as an example, we observe giant second-harmonic resistances induced by the Seebeck and Nernst effects, with a nonreciprocal coefficient value up to 5.4 x 10(-6) cm(2)/A, which is higher than that of most noncentrosymmetric crystals. The symmetry of second-harmonic resistance in magnetic fields can be further controlled by designing the electrode geometry and is decoupled from that of the first-harmonic resistance or the crystal symmetry. We show that such thermoelectric related nonreciprocal resistances also exist in macroscopic samples up to hundreds of microns. Our results not only introduce a simple yet effective approach to probe the thermoelectric effect, but also reveal a previously underestimated mechanism that strongly modifies the second-order transport coefficients.
资助项目	National Key Research and Development Program of China[2017YFA0303302] ; National Key Research and Development Program of China[2018YFA0305601] ; National Natural Science Foundation of China[11934005] ; National Natural Science Foundation of China[11874116] ; National Natural Science Foundation of China[62005079] ; Science and Technology Commission of Shanghai[19511120500] ; Shanghai Municipal Science and Technology Major Project[2019SHZDZX01] ; Program of Shanghai Academic/Technology Research Leader[20XD1400200] ; Shanghai Sailing Program[20YF1402300] ; Shanghai Sailing Program[20YF1411700] ; Natural Science Foundation of Shanghai[20ZR1407500] ; Fudan University ; International Scientific and Technological Cooperation Project of Shanghai[20520710900] ; East China Normal University ; Scientific Instrument Developing Project of the Chinese Academy of Sciences[YJKYYQ20180059] ; Natural Science Foundation of China[U1932154] ; Youth Innovation Promotion Association CAS[2018486]
WOS关键词	MAGNETORESISTANCE ; SURFACE
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000672600600004
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Science and Technology Commission of Shanghai ; Shanghai Municipal Science and Technology Major Project ; Program of Shanghai Academic/Technology Research Leader ; Shanghai Sailing Program ; Natural Science Foundation of Shanghai ; Fudan University ; International Scientific and Technological Cooperation Project of Shanghai ; East China Normal University ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/123345]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhang, Cheng
作者单位	1.Chinese Acad Sci, High Field Magnet Lab, Anhui Key Lab Condensed Matter Phys Extreme Condi, HFIPS, Hefei 230031, Peoples R China 2.Shanghai Res Ctr Quantum Sci, Shanghai 201315, Peoples R China 3.Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China 4.Fudan Univ, Inst Nanoelect Devices & Quantum Comp, Shanghai 200433, Peoples R China 5.Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China 6.Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China 7.East China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Cheng,Yuan, Xiang,Zhang, Jinglei,et al. Thermoelectric Origin of Giant Nonreciprocal Charge Transport in NbAs Nanobelts[J]. PHYSICAL REVIEW APPLIED,2021,15.
APA	Zhang, Cheng.,Yuan, Xiang.,Zhang, Jinglei.,Leng, Pengliang.,Mou, Yicheng.,...&Xiu, Faxian.(2021).Thermoelectric Origin of Giant Nonreciprocal Charge Transport in NbAs Nanobelts.PHYSICAL REVIEW APPLIED,15.
MLA	Zhang, Cheng,et al."Thermoelectric Origin of Giant Nonreciprocal Charge Transport in NbAs Nanobelts".PHYSICAL REVIEW APPLIED 15(2021).