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Physical Review B
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Physical Review B
Article . 2004 . Peer-reviewed
License: APS Licenses for Journal Article Re-use
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Doping dependence of many-body effects along the nodal direction in the high-Tccuprate(Bi,Pb)2Sr2CaCu2O8

Authors: Andreas Koitzsch; Sergey Borisenko; A. A. Kordyuk; Timur K. Kim; Martin Knupfer; Jörg Fink; Helmuth Berger; +1 Authors

Doping dependence of many-body effects along the nodal direction in the high-Tccuprate(Bi,Pb)2Sr2CaCu2O8

Abstract

Angle-resolved photoemission spectroscopy (ARPES) is used to study the doping dependence of the lifetime and the mass renormalization of the low-energy excitations in high-${T}_{c}$ cuprate $(\mathrm{B}\mathrm{i},\mathrm{P}\mathrm{b}{)}_{2}{\mathrm{Sr}}_{2}{\mathrm{CaCu}}_{2}{\mathrm{O}}_{8}$ along the zone diagonal. We find a linear energy dependence of the scattering rate for the underdoped samples and a quadratic energy dependence for the overdoped case. The mass enhancement of the quasiparticles due to the many body effects at the Fermi energy is found to be in the order of 2 and the renormalization extends over a large energy range for both the normal and the superconducting state. The much discussed kink in the dispersion around 70 meV is interpreted as a small additional effect at low temperatures.

Subjects by Vocabulary

Microsoft Academic Graph classification: Superconductivity Physics Condensed matter physics Photoemission spectroscopy Order (ring theory) Angle-resolved photoemission spectroscopy Fermi energy Quasiparticle Cuprate Atomic physics Energy (signal processing)

Keywords

Condensed Matter Physics, Electronic, Optical and Magnetic Materials

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  • citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    21
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
21
Average
Average
Top 10%
bronze