Sharp Low-Energy Feature in Single-Particle Spectra due to Forward Scattering in d-Wave Cuprate Superconductors

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	Sharp Low-Energy Feature in Single-Particle Spectra due to Forward Scattering in d-Wave Cuprate Superconductors
	Hong, SH ; Bok, JM ; Zhang, WT ; He, JF ; Zhou, XJ ; Varma, CM ; Choi, HY
刊名	PHYSICAL REVIEW LETTERS
	2014
卷号	113 期号:5
ISSN号	0031-9007
通讯作者	Choi, HY (reprint author), Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea.
中文摘要	There is an enormous interest in the renormalization of the quasiparticle (qp) dispersion relation of cuprate superconductors both below and above the critical temperature T-c because it enables the determination of the fluctuation spectrum to which the qp's are coupled. A remarkable discovery by angle-resolved photoemission spectroscopy (ARPES) is a sharp low-energy feature (LEF) in qp spectra well below the superconducting energy gap but with its energy increasing in proportion to T-c and its intensity increasing sharply below T-c. This unexpected feature needs to be reconciled with d-wave superconductivity. Here, we present a quantitative analysis of ARPES data from Bi2Sr2CaCu2O8+delta (Bi2212) using Eliashberg equations to show that the qp scattering rate due to the forward scattering impurities far from the Cu-O planes is modified by the energy gap below T-c and shows up as the LEF. This is also a necessary step to analyze ARPES data to reveal the spectrum of fluctuations promoting superconductivity.
资助信息	National Research Foundation (NRF) of Korea [NRF-2013R1A1A2061704]; NSFC [11190022, 11334010, 11374335]; MOST of China (973 programs) [2011CB921703, 2011CBA00110]; [NSF-DMR-1206298]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59584]
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	Hong, SH,Bok, JM,Zhang, WT,et al. Sharp Low-Energy Feature in Single-Particle Spectra due to Forward Scattering in d-Wave Cuprate Superconductors[J]. PHYSICAL REVIEW LETTERS,2014,113(5).
APA	Hong, SH.,Bok, JM.,Zhang, WT.,He, JF.,Zhou, XJ.,...&Choi, HY.(2014).Sharp Low-Energy Feature in Single-Particle Spectra due to Forward Scattering in d-Wave Cuprate Superconductors.PHYSICAL REVIEW LETTERS,113(5).
MLA	Hong, SH,et al."Sharp Low-Energy Feature in Single-Particle Spectra due to Forward Scattering in d-Wave Cuprate Superconductors".PHYSICAL REVIEW LETTERS 113.5(2014).