Quasiparticles in the superconducting state of Bi2 Sr2 CaCuO8 + δ

A. Kaminski, J. Mesot, H. Fretwell, J. C. Campuzano, M. R. Norman, M. Randeria, H. Ding, T. Sato, T. Takahashi, T. Mochiku, K. Kadowaki, H. Hoechst

研究成果: ジャーナルへの寄稿学術論文査読

191 被引用数 (Scopus)

抄録

Recent improvements in momentum resolution lead to qualitatively new angle-resolved photoemission spectroscopy results on the spectra of Bi2 Sr2 CaCuO8 + δ (Bi2212) along the (π, π) direction, where there is a node in the superconducting gap. We now see the intrinsic line shape, which indicates the presence of true quasiparticles at all Fermi momenta in the superconducting state, and lack thereof in the normal state. The region of momentum space probed here is relevant for charge transport, motivating a comparison of our results to conductivity measurements by infrared reflectivity.

本文言語英語
ページ(範囲)1788-1791
ページ数4
ジャーナルPhysical Review Letters
84
8
DOI
出版ステータス出版済み - 2000

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