New cubic carbon phase via graphitic sheet rumpling

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	New cubic carbon phase via graphitic sheet rumpling
	Wang, JT ; Chen, CF ; Kawazoe, Y
刊名	PHYSICAL REVIEW B
	2012
卷号	85 期号:21
关键词	AUGMENTED-WAVE METHOD X-RAY-DIFFRACTION HIGH-PRESSURE TRANSPARENT PHASE HEXAGONAL DIAMOND ROOM-TEMPERATURE TRANSFORMATION STATE GPA
ISSN号	1098-0121
通讯作者	Wang, JT (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	We report on local magnetization, tunnel diode oscillators, and specific-heat measurements in a series of Ba(NixFe1-x)(2)As-2 single crystals (0.26 <= x <= 0.74). We show that the London penetration depth lambda(T) = lambda(0) + Delta lambda(T) scales as lambda(0) proportional to 1/T-c(0.85+/-0.2), Delta lambda(T) proportional to T2.3+/-0.3 (for T < T-c/3), and partial derivative Delta lambda/partial derivative T-2 proportional to 1/T-c(2.8+/-0.3) in both underdoped and overdoped samples. Moreover, the slope of the upper critical field [H-c2' = -(dH(c2)/dT)(\|T -> Tc]) decreases with T-c in overdoped samples but increases with decreasing T-c in underdoped samples. The remarkable variation of lambda(0) with T-c and the nonexponential temperature dependence of Delta lambda clearly indicates that pair-breaking effects are important in this system. We show that the observed scalings strongly suggest that those pair-breaking effects could be associated with quantum fluctuations near three-dimensional superconducting critical points.
收录类别	SCI
资助信息	NSFC of China [10974230]; Ministry of environmental protection of China [200909086, 201109037]; DOE [DE-FC52-06NA27684]
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/311004/49835]
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	Wang, JT,Chen, CF,Kawazoe, Y. New cubic carbon phase via graphitic sheet rumpling[J]. PHYSICAL REVIEW B,2012,85(21).
APA	Wang, JT,Chen, CF,&Kawazoe, Y.(2012).New cubic carbon phase via graphitic sheet rumpling.PHYSICAL REVIEW B,85(21).
MLA	Wang, JT,et al."New cubic carbon phase via graphitic sheet rumpling".PHYSICAL REVIEW B 85.21(2012).