Percolative superconductivity in La2CuO4.06 by lattice granularity patterns with scanning micro x-ray absorption near edge structure

	Percolative superconductivity in La2CuO4.06 by lattice granularity patterns with scanning micro x-ray absorption near edge structure
	Poccia, N; Chorro, M; Ricci, A; Xu, W; Marcelli, A; Campi, G; Bianconi, A;徐伟
刊名	APPLIED PHYSICS LETTERS
	2014
卷号	104 期号:22 页码:221903
英文摘要	The simplest cuprate superconductor La2CuO4+y with mobile oxygen interstitials exhibits a clear phase separation. It is known that oxygen interstitials enter into the rocksalt La2O2+y spacer layers forming oxygen interstitials rich puddles and poor puddles but only recently a bulk multiscale structural phase separation has been observed by using scanning micro X-ray diffraction. Here we get further information on their spatial distribution, using scanning La L-3-edge micro X-ray absorption near edge structure. Percolating networks of oxygen rich puddles are observed in different micrometer size portions of the crystals. Moreover, the complex surface resistivity shows two jumps associated to the onset of intra-puddle and inter-puddles percolative superconductivity. The similarity of oxygen doped La2CuO4+y, with the well established phase separation in iron selenide superconductors is also discussed. (C) 2014 AIP Publishing LLC.
学科主题	Physics
收录类别	SCI
WOS记录号	WOS:000337161700023
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224828]
专题	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Poccia, N,Chorro, M,Ricci, A,et al. Percolative superconductivity in La2CuO4.06 by lattice granularity patterns with scanning micro x-ray absorption near edge structure[J]. APPLIED PHYSICS LETTERS,2014,104(22):221903.
APA	Poccia, N.,Chorro, M.,Ricci, A.,Xu, W.,Marcelli, A.,...&Bianconi, A；徐伟.(2014).Percolative superconductivity in La2CuO4.06 by lattice granularity patterns with scanning micro x-ray absorption near edge structure.APPLIED PHYSICS LETTERS,104(22),221903.
MLA	Poccia, N,et al."Percolative superconductivity in La2CuO4.06 by lattice granularity patterns with scanning micro x-ray absorption near edge structure".APPLIED PHYSICS LETTERS 104.22(2014):221903.