Quasi-particle density of states and bosonic modes in Bi2Sr2CaCu2O8+delta

doi:10.1016/j.physc.2018.10.014

ITP OpenIR > SCI期刊论文

	Wang, HT ; Tang, H 1; Su, ZB
	Quasi-particle density of states and bosonic modes in Bi2Sr2CaCu2O8+delta
Source Publication	PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
Language	英语
Keyword	HIGH-TEMPERATURE SUPERCONDUCTORS BAYESIAN-INFERENCE TUNNELING SPECTROSCOPY ANALYTIC CONTINUATION NEUTRON-SCATTERING MAXIMUM-ENTROPY PHOTOEMISSION RESONANCE
Abstract	The quasi-particle density of states (DOS) at temperatures from 4.2 K to high above the critical temperature T-c is obtained by inversion directly from the experimentally measured superconductor-insulator-superconductor (SIS) tunneling data performed on three different Bi2Sr2CaCu2O8+delta samples. Bosonic modes accompanying the superconductivity or related to the pseudogap, as well as their temperature-dependent energies are extracted by analyzing the fine structures exhibited in the DOS curves. Consistent with the coexistence of the two bosonic modes in the superconducting state for the optimally and underdoped samples, a kink is found in the derivative curve of the DOS with respect to the energy, which provides a kind of evidence for the coexistence of the pseudogap and superconductivity in these materials. These results shed light on the interactions between the charged carriers and the bosonic modes and may give us the fingerprints of the pairing gluons in the cuprates.
	2018
ISSN	0921-4534
Volume	555 Pages:54-59
Subject Area	Physics
MOST Discipline Catalogue	Physics, Applied ; Physics, Condensed Matter
DOI	10.1016/j.physc.2018.10.014
Indexed By	SCIE
Citation statistics
Document Type	期刊论文
Identifier	http://ir.itp.ac.cn/handle/311006/22762
Collection	SCI期刊论文
Affiliation	1.[Wang, Han-Ting 2.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
Recommended Citation GB/T 7714	Wang, HT,Tang, H,Su, ZB. Quasi-particle density of states and bosonic modes in Bi2Sr2CaCu2O8+delta[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,2018,555:54-59.
APA	Wang, HT,Tang, H,&Su, ZB.(2018).Quasi-particle density of states and bosonic modes in Bi2Sr2CaCu2O8+delta.PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,555,54-59.
MLA	Wang, HT,et al."Quasi-particle density of states and bosonic modes in Bi2Sr2CaCu2O8+delta".PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 555(2018):54-59.

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