Superconducting gap anisotropy and quasiparticle interactions: A doping dependent photoemission study

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

研究成果: Article査読

269 被引用数 (Scopus)

抄録

Comparing photoemission measurements on Bi2212 with penetration depth data, we show that a description of the nodal excitations of the d-wave superconducting state in terms of noninteracting quasiparticles is inadequate, and we estimate the magnitude and doping dependence of the Landau interaction parameter which renormalizes the linear T contribution to the superfluid density. Furthermore, although consistent with d-wave symmetry, the gap with underdoping cannot be fit by the simple coskx−cosky form, which suggests an increasing importance of long range interactions as the insulator is approached.

本文言語English
ページ(範囲)840-843
ページ数4
ジャーナルPhysical review letters
83
4
DOI
出版ステータスPublished - 1999 1 1

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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