Signature of superfluid density in the single-particle excitation spectrum of Bi2Sr2CaCu2O8+δ
By D. Feng, D. Lu, K. Shen, Changyoung Kim, H. Eisaki, A. Damascelli, R. Yoshizaki, J. Shimoyama, K. Kishio, G. Gu and 5 more. 2000
183 citations recorded by the source corpus.
We report that the doping and temperature dependence of photoemission spectra near the Brillouin zone boundary of Bi2Sr2CaCu2O8+δexhibit unexpected sensitivity to the superfluid density. In the superconducting state, the photoemission peak intensity as a function of doping scales with the superfluid density and the condensation energy. As a function of temperature, the peak intensity shows an abrupt behavior near the superconducting phase transition temperature where phase coherence sets in, rather than near the temperature where the gap opens. This anomalous manifestation of collective effects in single-particle spectroscopy raises important questions concerning the mechanism of high-temperature superconductivity.
Subfields: Condensed Matter Physics, Geophysics
View Paper: https://www.semanticscholar.org/paper/71191fe7911e467dbdf5625b8c3a3cc705b211c4
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In Condensed Matter Physics
Citations in the corpus
- Two energy scales and two distinct quasiparticle dynamics in the superconducting state of underdoped cuprates (2006, background): “The leading edge in the ANR (corresponding to the higher energy scale) was shown to increase as the doping level is reduced [24].”
- Angle-resolved photoemission studies of the cuprate superconductors (2002, methodology): “55(d) where the FWHM is plotted], the width of the superconducting peak does not appear to change significantly across the superconducting transition (Fedorov et al., 1999; Feng et al., 2000; Ding et al., 2001).”