The giant planar Hall effect and anisotropic magnetoresistance in Dirac node arcs semimetal PtSn4

doi:10.1088/1361-648X/ab851f

	The giant planar Hall effect and anisotropic magnetoresistance in Dirac node arcs semimetal PtSn4
	Yan, J.4,5; Luo, X.5; Gao, J. J.4,5; Lv, H. Y.5; Xi, C. Y.3; Sun, Y.2; Lu, W. J.5; Tong, P.5; Sheng, Z. G.1,3; Zhu, X. B.5
刊名	JOURNAL OF PHYSICS-CONDENSED MATTER
	2020-07-22
卷号	32
关键词	planar Hall effect topological materials anisotropic magnetoresistance
ISSN号	0953-8984
DOI	10.1088/1361-648X/ab851f
通讯作者	Luo, X.(xluo@issp.ac.cn)
英文摘要	Topological semimetals (TSMs) present intriguing quantum states and have attracted much attention in recent years because of exhibiting various anomalous magneto-transport phenomena. Theoretical prediction shows that some novel phenomena, such as negative magnetoresistance (MR) and the planar Hall effect (PHE), originate from the chiral anomaly in TSMs. In this work, high-field (33 T) Shubnikov-de Haas (SdH) oscillations are obtained to reveal the topology of PtSn4. Giant PHE and anisotropic magnetoresistance (AMR) are observed in Dirac node arcs of semimetal PtSn4. First, a non-zero transverse voltage can be acquired while tilting the in-plane magnetic field. Moreover, the amplitude of PHE sharply increases at T* similar to 50 K with decreasing temperature, which is suggested to be related to the Fermi surface reconstruction observed in PtSn4. Subsequently, the field-dependent amplitudes of the PHE show an abnormal behavior around 50 K, which is thought to stem from the complex correlation between the chiral charge and electric one in PtSn4 driving the system into different coupling states due to the complicated band structure. On the other hand, the relative AMR is negative and up to -98% at 8.5 T. Our work proves that the PHE measurements are a convincing transport fingerprint feature to confirm the chiral anomaly in TSMs.
资助项目	National Key Research and Development Program[2016YFA0300404] ; National Key Research and Development Program[2016YFA0401803] ; National Natural Science Foundation of China[11674326] ; National Natural Science Foundation of China[11874357] ; National Natural Science Foundation of China[U1832141] ; Chinese Academy of Sciences' (CAS)[U1832141] ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS[2018HSC-UE011] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SLH015]
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000535582400001
资助机构	National Key Research and Development Program ; National Natural Science Foundation of China ; Chinese Academy of Sciences' (CAS) ; Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS ; Key Research Program of Frontier Sciences, CAS
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/70504]
专题	中国科学院合肥物质科学研究院
通讯作者	Luo, X.
作者单位	1.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China 2.Anhui Univ, Inst Phys Sci & Informat Technol, Hefei 230601, Peoples R China 3.Chinese Acad Sci, High Magnet Field Lab, Anhui Prov Key Lab Condensed Matter Phys Extreme, Hefei 230031, Peoples R China 4.Univ Sci & Technol China, Hefei 230026, Peoples R China 5.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Yan, J.,Luo, X.,Gao, J. J.,et al. The giant planar Hall effect and anisotropic magnetoresistance in Dirac node arcs semimetal PtSn4[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2020,32.
APA	Yan, J..,Luo, X..,Gao, J. J..,Lv, H. Y..,Xi, C. Y..,...&Sun, Y. P..(2020).The giant planar Hall effect and anisotropic magnetoresistance in Dirac node arcs semimetal PtSn4.JOURNAL OF PHYSICS-CONDENSED MATTER,32.
MLA	Yan, J.,et al."The giant planar Hall effect and anisotropic magnetoresistance in Dirac node arcs semimetal PtSn4".JOURNAL OF PHYSICS-CONDENSED MATTER 32(2020).