Superconductivity in the bcc-Type High-Entropy Alloy TiHfNbTaMo

doi:10.1002/qute.202300213

IMR OpenIR

	Superconductivity in the bcc-Type High-Entropy Alloy TiHfNbTaMo
	Zeng, Lingyong 1; Zhan, Jie 2,3; Boubeche, Mebrouka 4; Li, Kuan 1; Li, Longfu 1; Yu, Peifeng 1; Wang, Kangwang 1; Zhang, Chao 1; Jin, Kui 4,5,6; Sun, Yan 2,3; Luo, Huixia 1
通讯作者	Luo, Huixia(luohx7@mail.sysu.edu.cn)
	2023-09-27
发表期刊	ADVANCED QUANTUM TECHNOLOGIES
页码	8
摘要	X-ray powder diffraction, electrical resistivity, magnetization, and thermodynamic measurements are conducted to investigate the structure and superconducting properties of TiHfNbTaMo, a novel high-entropy alloy possessing a valence electron count (VEC) of 4.8. The TiHfNbTaMo HEA is discovered to have a body-centered cubic structure (space group Im3 over bar m$Im\bar{3}m$) with lattice parameters a = 3.445 (1) & ANGS; and a microscopically homogeneous distribution of the constituent elements. This material shows type-II superconductivity with Tc = 3.42 K, lower critical field & mu;0Hc1(0) = 22.8 mT, and upper critical field & mu;0Hc2(0) = 3.95 T. Low-temperature specific heat measurements show that the alloy is a conventional s-wave type with a moderately coupled superconductor. First-principles calculations show that the density of states (DOS) of the TiHfNbTaMo alloy is dominated by hybrid d orbitals of these five metal elements. Additionally, the TiHfNbTaMo HEA exhibits three van Hove singularities. Furthermore, the VEC and the composition of the elements (especially the Nb elemental content) affect the Tc of the bcc-type HEA. TiHfNbTaMo HEA is a bcc-type superconductor with Tc & AP;3.42 K. First-principles calculations show that the DOS of the TiHfNbTaMo alloy is dominated by hybrid d orbitals of these five metal elements. Additionally, TiHfNbTaMo HEA exhibits three van Hove singularities. The VEC and the composition of the elements (especially the Nb elemental content) together affect the Tc of bcc-type HEA.image
关键词	first-principles calculations high-entropy alloy superconductivity valence electron count van Hove singularities
资助者	L.Z. and J.Z. contributed equally to this work. This work was supported by the National Natural Science Foundation of China (Grants no. 12274471, 11922415, 11974432, 52271016, and 52188101), the Guangdong Basic and Applied Basic Research Foundation (2022A1 ; National Natural Science Foundation of China ; Guangdong Basic and Applied Basic Research Foundation ; Chinaamp;apos;s Foreign Young Talents Program ; Key-Area Research and Development Program of Guangdong Province
DOI	10.1002/qute.202300213
收录类别	SCI
语种	英语
资助项目	L.Z. and J.Z. contributed equally to this work. This work was supported by the National Natural Science Foundation of China (Grants no. 12274471, 11922415, 11974432, 52271016, and 52188101), the Guangdong Basic and Applied Basic Research Foundation (2022A1[12274471] ; L.Z. and J.Z. contributed equally to this work. This work was supported by the National Natural Science Foundation of China (Grants no. 12274471, 11922415, 11974432, 52271016, and 52188101), the Guangdong Basic and Applied Basic Research Foundation (2022A1[11922415] ; L.Z. and J.Z. contributed equally to this work. This work was supported by the National Natural Science Foundation of China (Grants no. 12274471, 11922415, 11974432, 52271016, and 52188101), the Guangdong Basic and Applied Basic Research Foundation (2022A1[11974432] ; L.Z. and J.Z. contributed equally to this work. This work was supported by the National Natural Science Foundation of China (Grants no. 12274471, 11922415, 11974432, 52271016, and 52188101), the Guangdong Basic and Applied Basic Research Foundation (2022A1[52271016] ; L.Z. and J.Z. contributed equally to this work. This work was supported by the National Natural Science Foundation of China (Grants no. 12274471, 11922415, 11974432, 52271016, and 52188101), the Guangdong Basic and Applied Basic Research Foundation (2022A1[52188101] ; National Natural Science Foundation of China[2022A1515011168] ; National Natural Science Foundation of China[2019A1515011718] ; Guangdong Basic and Applied Basic Research Foundation[22KW041C211] ; Chinaamp;apos;s Foreign Young Talents Program[2020B0101340002] ; Key-Area Research and Development Program of Guangdong Province
WOS研究方向	Physics ; Optics
WOS类目	Quantum Science & Technology ; Optics
WOS记录号	WOS:001070797200001
出版者	WILEY
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/179220
专题	中国科学院金属研究所
通讯作者	Luo, Huixia
作者单位	1.Sun Yat Sen Univ, Sch Mat Sci & Engn, State Key Lab Optoelect Mat & Technol, Guangdong Prov Key Lab Magnetoelect Phys & Devices, 135 Xingang Xi Rd, Guangzhou 510275, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 4.Songshan Lake Mat Lab, Bldg A1, Dongguan 523808, Guang Dong, Peoples R China 5.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 6.Univ Chinese Acad Sci, Sch Phys Sci, Key Lab Vacuum Phys, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Lingyong,Zhan, Jie,Boubeche, Mebrouka,et al. Superconductivity in the bcc-Type High-Entropy Alloy TiHfNbTaMo[J]. ADVANCED QUANTUM TECHNOLOGIES,2023:8.
APA	Zeng, Lingyong.,Zhan, Jie.,Boubeche, Mebrouka.,Li, Kuan.,Li, Longfu.,...&Luo, Huixia.(2023).Superconductivity in the bcc-Type High-Entropy Alloy TiHfNbTaMo.ADVANCED QUANTUM TECHNOLOGIES,8.
MLA	Zeng, Lingyong,et al."Superconductivity in the bcc-Type High-Entropy Alloy TiHfNbTaMo".ADVANCED QUANTUM TECHNOLOGIES (2023):8.