Tunneling spectra of submicron Bi2Sr2CaCu2O8+delta intrinsic Josephson junctions: evolution from superconducting gap to pseudogap

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	Tunneling spectra of submicron Bi2Sr2CaCu2O8+delta intrinsic Josephson junctions: evolution from superconducting gap to pseudogap
	Zhao, SP ; Zhu, XB ; Tang, H
刊名	EUROPEAN PHYSICAL JOURNAL B
	2009
卷号	71 期号:2 页码:195
关键词	HIGH-TEMPERATURE SUPERCONDUCTORS OVERDOPED BI2SR2CACU2O8+DELTA SPECTROSCOPY FLUCTUATIONS DENSITY
ISSN号	1434-6028
通讯作者	Zhao, SP (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	Tunneling spectra of near optimally doped, submicron Bi2Sr2CaCu2O8+delta intrinsic Josephson junctions are presented, and examined in the region where the superconducting gap evolves into pseudogap. The spectra are analyzed using a self-energy model, proposed by Norman et al., in which both quasiparticle scattering rate Gamma and pair decay rate Gamma(Delta) are considered. The density of states derived from the model has the familiar Dynes' form with a simple replacement of Gamma by gamma(+) = (Gamma+Gamma(Delta))/2. The gamma(+) parameter obtained from fitting the experimental spectra shows a roughly linear temperature dependence, which puts a strong constraint on the relation between Gamma and Gamma(Delta). We discuss and compare the Fermi arc behavior in the pseudogap phase from the tunneling and angle-resolved photoemission spectroscopy experiments. Our results indicate an excellent agreement between the two experiments, which is in favor of the precursor pairing view of the pseudogap.
收录类别	SCI
资助信息	Ministry of Science and Technology of China [2006CB601007]; Knowledge Innovation Project of the Chinese Academy of Sciences; National Natural Science Foundation of China [10604064]
语种	英语
公开日期	2013-09-23
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/46217]
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	Zhao, SP,Zhu, XB,Tang, H. Tunneling spectra of submicron Bi2Sr2CaCu2O8+delta intrinsic Josephson junctions: evolution from superconducting gap to pseudogap[J]. EUROPEAN PHYSICAL JOURNAL B,2009,71(2):195.
APA	Zhao, SP,Zhu, XB,&Tang, H.(2009).Tunneling spectra of submicron Bi2Sr2CaCu2O8+delta intrinsic Josephson junctions: evolution from superconducting gap to pseudogap.EUROPEAN PHYSICAL JOURNAL B,71(2),195.
MLA	Zhao, SP,et al."Tunneling spectra of submicron Bi2Sr2CaCu2O8+delta intrinsic Josephson junctions: evolution from superconducting gap to pseudogap".EUROPEAN PHYSICAL JOURNAL B 71.2(2009):195.