Raman-scattering measurements and theory of the energy-momentum spectrum for Underdoped Bi2Sr2CaCuO8+δ Superconductors: Evidence of an s-wave structure for the pseudogap

S. Sakai, S. Blanc, M. Civelli, Y. Gallais, M. Cazayous, M. A. Méasson, J. S. Wen, Z. J. Xu, G. D. Gu, G. Sangiovanni, Y. Motome, K. Held, A. Sacuto, A. Georges, M. Imada

研究成果: Article査読

55 被引用数 (Scopus)

抄録

We reveal the full energy-momentum structure of the pseudogap of underdoped high-Tc cuprate superconductors. Our combined theoretical and experimental analysis explains the spectral-weight suppression observed in the B2g Raman response at finite energies in terms of a pseudogap appearing in the single-electron excitation spectra above the Fermi level in the nodal direction of momentum space. This result suggests an s-wave pseudogap (which never closes in the energy-momentum space), distinct from the d-wave superconducting gap. Recent tunneling and photoemission experiments on underdoped cuprates also find a natural explanation within the s-wave pseudogap scenario.

本文言語English
論文番号107001
ジャーナルPhysical Review Letters
111
10
DOI
出版ステータスPublished - 2013 9 3
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy(all)

フィンガープリント 「Raman-scattering measurements and theory of the energy-momentum spectrum for Underdoped Bi<sub>2</sub>Sr<sub>2</sub>CaCuO<sub>8+δ</sub> Superconductors: Evidence of an s-wave structure for the pseudogap」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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