Superconducting gap and pseudogap in near-optimally doped Bi2Sr2-xLaxCuO6+delta

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	Superconducting gap and pseudogap in near-optimally doped Bi2Sr2-xLaxCuO6+delta
	Ren, JK ; Wei, YF ; Yu, HF ; Tian, Y ; Ren, YF ; Zheng, DN ; Zhao, SP ; Lin, CT
刊名	PHYSICAL REVIEW B
	2012
卷号	86 期号:1
关键词	HIGH-TEMPERATURE SUPERCONDUCTOR TUNNELING SPECTROSCOPY SINGLE-CRYSTALS CUPRATE SUPERCONDUCTORS BI2SR2CACU2O8+DELTA DEPENDENCE
ISSN号	1098-0121
通讯作者	Ren, JK (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	We present a tunneling study of the superconducting gap and pseudogap from near optimally doped submicron Bi2Sr2-xLaxCuO6+delta intrinsic Josephson junctions whose self-heating is significantly suppressed. We find that as temperature decreases a pseudogap develops around T-star = 165 K while the superconducting gap starts to open at T-c0 = 40 K, which is well above the superconducting transition temperature T-c of 30 K. We discuss the temperature-dependent properties of the superconducting phase and pseudogap phase. Our results demonstrate a clear two-gap feature of the system with precursor pairing up to T-c0.
收录类别	SCI
资助信息	National Natural Science Foundation of China [10974242]; Ministry of Science and Technology of China [2011CBA00106]
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/311004/53958]
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	Ren, JK,Wei, YF,Yu, HF,et al. Superconducting gap and pseudogap in near-optimally doped Bi2Sr2-xLaxCuO6+delta[J]. PHYSICAL REVIEW B,2012,86(1).
APA	Ren, JK.,Wei, YF.,Yu, HF.,Tian, Y.,Ren, YF.,...&Lin, CT.(2012).Superconducting gap and pseudogap in near-optimally doped Bi2Sr2-xLaxCuO6+delta.PHYSICAL REVIEW B,86(1).
MLA	Ren, JK,et al."Superconducting gap and pseudogap in near-optimally doped Bi2Sr2-xLaxCuO6+delta".PHYSICAL REVIEW B 86.1(2012).