Energy gaps in Bi2Sr2CaCu2O8+delta cuprate superconductors

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	Energy gaps in Bi2Sr2CaCu2O8+delta cuprate superconductors
	Ren, JK ; Zhu, XB ; Yu, HF ; Tian, Y ; Yang, HF ; Gu, CZ ; Wang, NL ; Ren, YF ; Zhao, SP
刊名	SCIENTIFIC REPORTS
	2012
卷号	2
关键词	HIGH-TEMPERATURE SUPERCONDUCTOR TUNNELING SPECTROSCOPY UNDERDOPED BI2SR2CACU2O8+DELTA SINGLE-CRYSTALS DEPENDENCE TRANSITION PSEUDOGAP
ISSN号	2045-2322
通讯作者	Zhao, SP: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	The relationship between the cuprate pseudogap (Delta(p)) and superconducting gap (Delta(s)) remains an unsolved mystery. Here, we present a temperature-and doping-dependent tunneling study of submicron Bi2Sr2CaCu2O8+delta intrinsic Josephson junctions, which provides a clear evidence that Delta(s) closes at a temperature T-c0 well above the superconducting transition temperature T-c but far below the pseudogap opening temperature T*. We show that the superconducting pairing first occurs predominantly on a limited Fermi surface near the node below T-c0, accompanied by a Fermi arc due to the lifetime effects of quasiparticles and Cooper pairs. The arc length has a linear temperature dependence, and as temperature decreases below T-c it reduces to zero while pairing spreads to the antinodal region of the pseudogap leading to a d-wave superconducting gap on the entire Fermi surface at lower temperatures.
收录类别	SCI
资助信息	National Natural Science Foundation of China [10974242, 50825206]; Ministry of Science and Technology of China [2011CBA00106]
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/37305]
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,Zhu, XB,Yu, HF,et al. Energy gaps in Bi2Sr2CaCu2O8+delta cuprate superconductors[J]. SCIENTIFIC REPORTS,2012,2.
APA	Ren, JK.,Zhu, XB.,Yu, HF.,Tian, Y.,Yang, HF.,...&Zhao, SP.(2012).Energy gaps in Bi2Sr2CaCu2O8+delta cuprate superconductors.SCIENTIFIC REPORTS,2.
MLA	Ren, JK,et al."Energy gaps in Bi2Sr2CaCu2O8+delta cuprate superconductors".SCIENTIFIC REPORTS 2(2012).