SUPERCONDUCTIVITY AND SPIN FLUCTUATIONS IN THE ELECTRON-DOPED INFINITELY-LAYERED HIGH T-C SUPERCONDUCTOR SR0.9LA0.1CUO2 (T-C=42 K)

We report Cu-63 NMR studies on uniaxially aligned and unaligned powder samples of an electron-doped infinitely-layered high T-c cuprate supe rconductor Sr0.9La0.1CuO2 (T-c=42 K). We measured the nuclear spin-lat tice relaxation rate 1/T-1 up to 800 K. We found from the temperature dependence of 1/T1T that the wave-vector-averaged spin susceptibility is highly enhanced by spin-fluctuations in the normal state, resulting in a Curie-Weiss behavior. Below T-c, we did not observe a Hebel-Slic hter coherence peak of 1/T-1, suggesting an unconventional nature of t he symmetry of the superconducting order parameter. These results are quite similar to those observed for some hole-doped high T-c cuprates.