Penetration depth study of LaOs4Sb12: Multiband s-wave superconductivity

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	Penetration depth study of LaOs4Sb12: Multiband s-wave superconductivity
	Xiang, T
刊名	PHYSICAL REVIEW B
	2012
卷号	86 期号:6 页码:64518
关键词	FIELD SYMMETRY ORDER HEAT
ISSN号	1098-0121
通讯作者	Tee, XY (reprint author), Nanyang Technol Univ, Div Phys & Appl Phys, Sch Phys & Math Sci, Singapore 637371, Singapore.
英文摘要	We measured the magnetic penetration depth lambda(T) in single crystals of LaOs4Sb12 (T-c = 0.74 K) down to 85 mK using a tunnel-diode-oscillator technique. The observed low-temperature exponential dependence indicates an s-wave gap. Fitting the low-temperature data to a BCS s-wave expression gives the zero-temperature gap value Delta(0) = (1.34 +/- 0.07)k(B)T(c) which is significantly smaller than the BCS value of 1.76k(B)T(c). In addition, the normalized superfluid density rho(T) shows an unusually long suppression near T-c and is best fit by a two-band s-wave model.
学科主题	Physics
收录类别	SCI
资助信息	NSF [DMR99-72087, DMR01-07253]; US Department of Energy [DEFG02-91-ER45439]; National Research Foundation of Singapore; NSFC [10934008, 10874215, 11174115]; MOST 973 Project of China [2011CB309703]; Ministry of Education, Culture, Sports, Science, and Technology, Japan [21102503]
原文出处	http://dx.doi.org/10.1103/PhysRevB.86.064518
语种	英语
WOS记录号	WOS:000307719100005
公开日期	2014-04-25
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15045]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Xiang, T. Penetration depth study of LaOs4Sb12: Multiband s-wave superconductivity[J]. PHYSICAL REVIEW B,2012,86(6):64518.
APA	Xiang, T.(2012).Penetration depth study of LaOs4Sb12: Multiband s-wave superconductivity.PHYSICAL REVIEW B,86(6),64518.
MLA	Xiang, T."Penetration depth study of LaOs4Sb12: Multiband s-wave superconductivity".PHYSICAL REVIEW B 86.6(2012):64518.