Two-fermi-surface superconducting state and a nodal d-wave energy gap of the electron-doped Sm1.85Ce0.15CuO4-δ cuprate superconductor

A. F. Santander-Syro, M. Ikeda, T. Yoshida, A. Fujimori, K. Ishizaka, M. Okawa, S. Shin, R. L. Greene, N. Bontemps

研究成果: Article査読

23 被引用数 (Scopus)

抄録

We report on laser-excited angle-resolved photoemission spectroscopy in the electron-doped cuprate Sm1.85Ce0.15CuO 4-δ. The data show the existence of a nodal hole-pocket Fermi surface both in the normal and superconducting states. We prove that its origin is long-range antiferromagnetism by an analysis of the coherence factors in the main and folded bands. This coexistence of long-range antiferrmagnetism and superconductivity implies that electron-doped cuprates are two-Fermi-surface superconductors. The measured superconducting gap in the nodal hole pocket is compatible with a d-wave symmetry.

本文言語English
論文番号197002
ジャーナルPhysical Review Letters
106
19
DOI
出版ステータスPublished - 2011 5 9
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy(all)

フィンガープリント 「Two-fermi-surface superconducting state and a nodal d-wave energy gap of the electron-doped Sm<sub>1.85</sub>Ce<sub>0.15</sub>CuO<sub>4-δ</sub> cuprate superconductor」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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