Electrical and Magnetic Properties for Bulk FeSe and FeSe0.5Te0.5 Superconductors

doi:10.1007/s11664-020-08666-x

HFCAS OpenIR

	Electrical and Magnetic Properties for Bulk FeSe and FeSe0.5Te0.5 Superconductors
	Li, D.1 ; Zhang, B. L.1 ; Ming, H. W.1; Qin, X. Y.1,2,3,4; Zhang, J.1,2,3,4 ; Liu, H. J.2,3
	2021-01-03
发表期刊	JOURNAL OF ELECTRONIC MATERIALS
ISSN	0361-5235
通讯作者	Li, D.(lidi@issp.ac.cn)
摘要	We report a one-step low temperature sintering method for preparing high quality FeSe and FeSe(0.5)Te(0.5)polycrystalline superconductors, and investigate their transport and magnetic properties. The low temperature resistance results show that onset temperatures of the superconducting transition for FeSe and FeSe0.5Te0.5 are 11.06 K and 14.72 K, respectively. X-ray diffraction results demonstrate that Te alloying causes expansion of lattice parameters, and density functional theory calculations confirm that Te-5p orbital electrons are related to the enhancement of the temperature of the superconducting transition. Magnetic measurements reveal that the superconducting diamagnetic transition appears at 9.35 K and 14.16 K for FeSe and FeSe0.5Te0.5, respectively, in keeping with the initial transition temperature of zero resistivity. In addition, high temperature transport results show that there is a sign crossover in the thermopower for FeSe and FeSe0.5Te0.5, which is due to the dominant contributions from electrons and holes.
关键词	Superconductivity FeSe-based materials magnetism
DOI	10.1007/s11664-020-08666-x
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2018YFA0704303]
项目资助者	National Key Research and Development Program of China
WOS研究方向	Engineering ; Materials Science ; Physics
WOS类目	Engineering, Electrical & Electronic ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000604509300013
出版者	SPRINGER
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/120030
专题	中国科学院合肥物质科学研究院
通讯作者	Li, D.
作者单位	1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Photovolta & Energy Conservat Mat, HFIPS, Hefei 230031, Peoples R China 2.AnHui Univ, Inst Phys Sci, Hefei 230601, Peoples R China 3.AnHui Univ, Inst Informat Technol, Hefei 230601, Peoples R China 4.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Li, D.,Zhang, B. L.,Ming, H. W.,et al. Electrical and Magnetic Properties for Bulk FeSe and FeSe0.5Te0.5 Superconductors[J]. JOURNAL OF ELECTRONIC MATERIALS,2021.
APA	Li, D.,Zhang, B. L.,Ming, H. W.,Qin, X. Y.,Zhang, J.,&Liu, H. J..(2021).Electrical and Magnetic Properties for Bulk FeSe and FeSe0.5Te0.5 Superconductors.JOURNAL OF ELECTRONIC MATERIALS.
MLA	Li, D.,et al."Electrical and Magnetic Properties for Bulk FeSe and FeSe0.5Te0.5 Superconductors".JOURNAL OF ELECTRONIC MATERIALS (2021).