Quantum oscillations and anomalous angle-dependent magnetoresistance in the topological candidate Ag3Sn

doi:10.1103/PhysRevB.101.245102

	Quantum oscillations and anomalous angle-dependent magnetoresistance in the topological candidate Ag3Sn
	Zhou, Nan 2,3,4; Sun, Yue 6; Xu, C. Q.2,3; Xi, C. Y.5; Wang, Z. S.5; Li, B.1,8; Feng, J. J.2,3; Zhang, L.5; Xing, X. Z.2,3; Zhang, Y. F.2,3
刊名	PHYSICAL REVIEW B
	2020-06-01
卷号	101
ISSN号	2469-9950
DOI	10.1103/PhysRevB.101.245102
通讯作者	Zhou, Nan(230159455@seu.edu.cn) ; Sun, Yue(sunyue@phys.aoyama.ac.jp) ; Shi, Zhixiang(zxshi@seu.edu.cn)
英文摘要	Because of their unique electronic structure and peculiar physical properties, topological materials have attracted considerable attention in condensed matter physics. In both physics and material science, exploring materials with a topological state or Dirac fermions near the Fermi level is important. Here, we report the transport evidence of the topological state for Ag3Sn. Under a high magnetic field, we observed clear Shubnikov-de Haas (SdH) oscillations with three major frequencies and relatively small effective masses. Our SdH quantum oscillation analyses reveal that the Berry phase of the y band is very close to the nontrivial value pi; the nonzero Berry phase for the alpha band indicates the Ag3Sn alloy to be a possible topological material. Moreover, we performed angle-resolved magnetoresistance (MR) measurements. Note that MR displays an unusual angular dependence, which can be tuned from twofold to fourfold symmetry by temperature and field. This feature makes Ag3Sn a candidate for valleytronics.
资助项目	National Natural Science Foundation of China[11674054] ; National Natural Science Foundation of China[11974061] ; National Natural Science Foundation of China[U1932217] ; National Natural Science Foundation of China[U1732162] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB25000000] ; JSPS KAKENHI[JP20H05164] ; JSPS KAKENHI[JP19K14661]
WOS关键词	ULTRAHIGH MOBILITY ; FREE SOLDERS ; SILVER ; PHASE
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000537154000011
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; JSPS KAKENHI
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/103221]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhou, Nan; Sun, Yue; Shi, Zhixiang
作者单位	1.Nanjing Univ Posts & Telecommun, New Energy Technol Engn Lab Jiangsu Prov, Nanjing 210023, Peoples R China 2.Southeast Univ, Minist Educ, Sch Phys, Nanjing 211189, Peoples R China 3.Southeast Univ, Key Lab MEMS, Minist Educ, Nanjing 211189, Peoples R China 4.Univ Tokyo, Inst Solid State Phys ISSP, Kashiwa, Chiba 2778581, Japan 5.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme, High Magnet Field Lab, Hefei 230031, Peoples R China 6.Aoyama Gaguin Univ, Dept Phys & Math, Shibuya, Kanagawa 2525258, Japan 7.Zhejiang Univ Technol, Dept Appl Phys, Hangzhou 310023, Peoples R China 8.Nanjing Univ Posts & Telecommun, Sch Sci, Nanjing 210023, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Nan,Sun, Yue,Xu, C. Q.,et al. Quantum oscillations and anomalous angle-dependent magnetoresistance in the topological candidate Ag3Sn[J]. PHYSICAL REVIEW B,2020,101.
APA	Zhou, Nan.,Sun, Yue.,Xu, C. Q..,Xi, C. Y..,Wang, Z. S..,...&Shi, Zhixiang.(2020).Quantum oscillations and anomalous angle-dependent magnetoresistance in the topological candidate Ag3Sn.PHYSICAL REVIEW B,101.
MLA	Zhou, Nan,et al."Quantum oscillations and anomalous angle-dependent magnetoresistance in the topological candidate Ag3Sn".PHYSICAL REVIEW B 101(2020).