Possible two-gap behavior in noncentrosymmetric superconductor Mg10Ir19B16: A penetration depth study

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	Possible two-gap behavior in noncentrosymmetric superconductor Mg10Ir19B16: A penetration depth study
	Bonalde, I ; Ribeiro, RL ; Bramer-Escamilla, W ; Mu, G ; Wen, HH
刊名	PHYSICAL REVIEW B
	2009
卷号	79 期号:5
ISSN号	1098-0121
通讯作者	Bonalde, I (reprint author), Inst Venezolano Invest Cient, Ctr Fis, Apartado 20632, Caracas 1020A, Venezuela.
中文摘要	We report measurements of the magnetic penetration depth lambda(T) of Mg10Ir19B16 down to 50 mK (< 0.01T(c)). We observe a sample-independent small second drop around 0.8 K and an overall low-temperature response that indicate a possible two-gap superconductivity in Mg10Ir19B16. A two-isotropic-gap model can account for the present penetration depth data. However, the lack of inversion symmetry in this compound with the heavy transition element Ir may lead to a large antisymmetric spin-orbit coupling that splits the spin bands and mixes spin-singlet and spin-triplet states. A model based on the two spin-split bands, with nodeless anisotropic gaps and dominant spin-triplet components, can also explain the present results. The data rule out an isotropic spin-singlet gap structure, as suggested by specific-heat measurements.
收录类别	SCI
资助信息	FONACIT, Venezuela [S1-2001000693]
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/51181]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Bonalde, I,Ribeiro, RL,Bramer-Escamilla, W,et al. Possible two-gap behavior in noncentrosymmetric superconductor Mg10Ir19B16: A penetration depth study[J]. PHYSICAL REVIEW B,2009,79(5).
APA	Bonalde, I,Ribeiro, RL,Bramer-Escamilla, W,Mu, G,&Wen, HH.(2009).Possible two-gap behavior in noncentrosymmetric superconductor Mg10Ir19B16: A penetration depth study.PHYSICAL REVIEW B,79(5).
MLA	Bonalde, I,et al."Possible two-gap behavior in noncentrosymmetric superconductor Mg10Ir19B16: A penetration depth study".PHYSICAL REVIEW B 79.5(2009).