Superconductivity, electronic phase diagram, and pressure effect in Sr1-xPrxFBiS2

doi:10.1007/s11433-018-9326-4

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院强磁场科学中心

	Superconductivity, electronic phase diagram, and pressure effect in Sr1-xPrxFBiS2
	You, Wei 2,6; Li, Lin 2,6; Yang, HaiYang 2,6; Wang, JiaLu 2,6; Mao, HongYing 2,6; Zhang, Li 3; Xi, ChuanYing 5; Cheng, Jie 4; Luo, YongKang 1; Dai, JianHui 2,6
刊名	SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
	2019-05-01
卷号	62 期号:5 页码:8
关键词	BiS2-based superconductors superconductivity phase diagram pressure effect
ISSN号	1674-7348
DOI	10.1007/s11433-018-9326-4
通讯作者	Dai, JianHui(daijh@hznu.edu.cn) ; Li, YuKe(yklee@hznu.edu.cn)
英文摘要	Based on a combination of X-ray diffraction, electrical transports, magnetic susceptibility, specific heat, and pressure-effect measurements, we report the results of experiments on a series of BiS2-based Sr1-xPrxFBiS2 superconductors with the maximum T-c of 2.7 K for x=0.5 and at ambient pressure. Superconductivity appears only for 0.4x0.7 whereas the normal-state resistivity shows the semiconducting-like behaviors. The magnetic susceptibility (T) displays the low superconducting shielding volume fractions and C(T) shows no distinguishable anomaly near T-c, which suggests a filamentary superconductivity in the Pr-doped polycrystalline samples. By varying doping concentrations, an electronic phase diagram is established. Upon applying pressure on the optimally doped Sr0.5Pr0.5FBiS2 system, T-c is abruptly enhanced, reaches 8.5 K at the critical pressure of P-c=1.5 GPa, and increases slightly to 9.7 K at 2.5 GPa. Accompanied by the enhancement of superconductivity from the low- to the high-T-c phases, the normal state undergoes a semiconductor-to-metal transition when under pressure. This scenario may be linked to enhanced overlap of the Bi-6p and S-p orbitals, which contributes to the enhanced superconductivity above P-c. The pressuretemperature phase diagram for Sr0.5Pr0.5FBiS2 is also presented.
资助项目	National Natural Science Foundation of China[11474082] ; National Natural Science Foundation of China[61401136] ; National Natural Science Foundation of China[61376094] ; Natural Science Foundation of Zhejiang Province[LY18F010019] ; QianJiang Talents Program of Zhejiang Province ; Wuhan National High Magnetic Field Center[2016KF03] ; Natural Science Foundation of Jiangsu Province of China[BK20171440] ; 1000 Youth Talents Plan of China
WOS研究方向	Physics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000460569800001
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Zhejiang Province ; Natural Science Foundation of Zhejiang Province ; Natural Science Foundation of Zhejiang Province ; Natural Science Foundation of Zhejiang Province ; QianJiang Talents Program of Zhejiang Province ; QianJiang Talents Program of Zhejiang Province ; QianJiang Talents Program of Zhejiang Province ; QianJiang Talents Program of Zhejiang Province ; Wuhan National High Magnetic Field Center ; Wuhan National High Magnetic Field Center ; Wuhan National High Magnetic Field Center ; Wuhan National High Magnetic Field Center ; Natural Science Foundation of Jiangsu Province of China ; Natural Science Foundation of Jiangsu Province of China ; Natural Science Foundation of Jiangsu Province of China ; Natural Science Foundation of Jiangsu Province of China ; 1000 Youth Talents Plan of China ; 1000 Youth Talents Plan of China ; 1000 Youth Talents Plan of China ; 1000 Youth Talents Plan of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Zhejiang Province ; Natural Science Foundation of Zhejiang Province ; Natural Science Foundation of Zhejiang Province ; Natural Science Foundation of Zhejiang Province ; QianJiang Talents Program of Zhejiang Province ; QianJiang Talents Program of Zhejiang Province ; QianJiang Talents Program of Zhejiang Province ; QianJiang Talents Program of Zhejiang Province ; Wuhan National High Magnetic Field Center ; Wuhan National High Magnetic Field Center ; Wuhan National High Magnetic Field Center ; Wuhan National High Magnetic Field Center ; Natural Science Foundation of Jiangsu Province of China ; Natural Science Foundation of Jiangsu Province of China ; Natural Science Foundation of Jiangsu Province of China ; Natural Science Foundation of Jiangsu Province of China ; 1000 Youth Talents Plan of China ; 1000 Youth Talents Plan of China ; 1000 Youth Talents Plan of China ; 1000 Youth Talents Plan of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/42427]
专题	合肥物质科学研究院_中科院强磁场科学中心
通讯作者	Dai, JianHui; Li, YuKe
作者单位	1.Huazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, Sch Phys, Wuhan 430074, Hubei, Peoples R China 2.Hangzhou Normal Univ, Dept Phys, Hangzhou 311121, Zhejiang, Peoples R China 3.China Jiliang Univ, Dept Phys, Hangzhou 310018, Zhejiang, Peoples R China 4.Nanjing Univ Posts & Telecommun, Coll Sci, Ctr Adv Funct Ceram, Nanjing 210023, Jiangsu, Peoples R China 5.Chinese Acad Sci, High Magnet Field Lab, Hefei 230031, Anhui, Peoples R China 6.Hangzhou Normal Univ, Hangzhou Key Lab Quantum Matter, Hangzhou 311121, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	You, Wei,Li, Lin,Yang, HaiYang,et al. Superconductivity, electronic phase diagram, and pressure effect in Sr1-xPrxFBiS2[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2019,62(5):8.
APA	You, Wei.,Li, Lin.,Yang, HaiYang.,Wang, JiaLu.,Mao, HongYing.,...&Li, YuKe.(2019).Superconductivity, electronic phase diagram, and pressure effect in Sr1-xPrxFBiS2.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,62(5),8.
MLA	You, Wei,et al."Superconductivity, electronic phase diagram, and pressure effect in Sr1-xPrxFBiS2".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 62.5(2019):8.