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Non-Monotonic Evolution of Carrier Density and Mobility under Thermal Cycling Treatments in Dirac Semimetal Cd3As2 Microbelts

文献类型：期刊论文

作者Chen, Zheng1,4; Wu, Min1,4; Liu, Yequn3; Gao, Wenshuai2; Han, Yuyan1; Zhou, Jianhui1; Ning, Wei1; Tian, Mingliang1,2
刊名CHINESE PHYSICS LETTERS
出版日期2021-05-01
卷号38
ISSN号0256-307X
DOI10.1088/0256-307X/38/4/047201
通讯作者Zhou, Jianhui(jhzhou@hmfl.ac.cn) ; Ning, Wei(ningwei@hmfl.ac.cn)
英文摘要Tunable carrier density plays a key role in the investigation of novel transport properties in three-dimensional topological semimetals. We demonstrate that the carrier density, as well as the mobility, of Dirac semimetal Cd3As2 nanoplates can be effectively tuned via in situ thermal treatment at 350 K for one hour, resulting in non-monotonic evolution by virtue of the thermal cycling treatments. The upward shift of Fermi level relative to the Dirac nodes blurs the surface Fermi-arc states, accompanied by an anomalous phase shift in the oscillations of bulk states, due to a change in the topology of the electrons. Meanwhile, the oscillation peaks of bulk longitudinal magnetoresistivity shift at high fields, due to their coupling to the oscillations of the surface Fermi-arc states. Our work provides a thermal control mechanism for the manipulation of quantum states in Dirac semimetal Cd3As2 at high temperatures, via their carrier density.
WOS关键词NEGATIVE MAGNETORESISTANCE ; ELECTRIC CONTROL ; SURFACE-STATES ; BERRYS PHASE ; TRANSPORT
资助项目National Key Research and Development Program of China[2016YFA0401003] ; National Natural Science Foundation of China[11804340] ; National Natural Science Foundation of China[11774353] ; National Natural Science Foundation of China[U19A2093] ; National Natural Science Foundation of China[U1732274] ; CAS/SAFEA International Partnership Program for Creative Research Teams of China
WOS研究方向Physics
语种英语
WOS记录号WOS:000655587900001
出版者IOP PUBLISHING LTD
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China ; CAS/SAFEA International Partnership Program for Creative Research Teams of China
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/123691]  
专题中国科学院合肥物质科学研究院
通讯作者Zhou, Jianhui; Ning, Wei
作者单位1.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme, High Field Magnet Lab, Hefei 230031, Peoples R China
2.Anhui Univ, Sch Phys & Mat Sci, Dept Phys, Hefei 230601, Peoples R China
3.Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Analyt Instrumentat Ctr, Taiyuan 030001, Peoples R China
4.Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Zheng,Wu, Min,Liu, Yequn,et al. Non-Monotonic Evolution of Carrier Density and Mobility under Thermal Cycling Treatments in Dirac Semimetal Cd3As2 Microbelts[J]. CHINESE PHYSICS LETTERS,2021,38.
APA Chen, Zheng.,Wu, Min.,Liu, Yequn.,Gao, Wenshuai.,Han, Yuyan.,...&Tian, Mingliang.(2021).Non-Monotonic Evolution of Carrier Density and Mobility under Thermal Cycling Treatments in Dirac Semimetal Cd3As2 Microbelts.CHINESE PHYSICS LETTERS,38.
MLA Chen, Zheng,et al."Non-Monotonic Evolution of Carrier Density and Mobility under Thermal Cycling Treatments in Dirac Semimetal Cd3As2 Microbelts".CHINESE PHYSICS LETTERS 38(2021).

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来源：合肥物质科学研究院

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