Superconductivity and Spin Fluctuations in the Electron-Doped Infinitely-Layered High Tc Superconductor Sr$_0.9$La$_0.1$CuO$_2$ (Tc=42K)

Details Superconductivity and Spin Fluctuations in the Electron-Doped Infinitely-Layered High Tc Superconductor Sr$_0.9$La$_0.1$CuO$_2$ (Tc=42K) Superconductivity and Spin Fluctuations in the Electron-Doped Infinitely-Layered High Tc Superconductor Sr$_0.9$La$_0.1$CuO$_2$ (Tc=42K)

2001-12-20

arxiv.org/abs/cond-mat/0112401v1

J. Phys. Chem. Solids 56 (1995) 1921-1925

Physics

Condensed Matter

Superconductivity

Invited Paper to SNS-95 Conference (Spectroscopies on Novel Superconductors 1995 at Stanford). Also presented at Aspen Winter

Scientific paper

This paper describes the first 63-Cu NMR study of an electron-doped infinitely-layered high Tc superconductor Sr$_0.9$La$_0.1$CuO$_2$ (Tc=42K). The spin dynamics in the normal state above Tc exhibits qualitatively the same behavior as some hole-doped materials with significantly enhanced spin fluctuations. Below Tc, we observed no signature of a Hebel-Slichter coherence peak, suggesting an unconventional nature of the symmetry of the superconducting order parameter.

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