We report copper NQR and NMR measurements performed on the series La2-xSrxCuO4 (0.10 ≤ x ≤ 0.20). For each composition, two distinct sites of copper were observed. The relative occupation of the two sites correlates well with strontium doping. Transverse NMR shifts (H ⊥ c) of the two copper sites were derived from the NMR and NQR spectra. The temperature dependence of the 63Cu NMR frequency shifts are identical for both sites, indicating that they have the same electronic spin susceptibility and hyperfine fields, and both are in the superconducting phase having the same critical temperature. However, these two sites have distinct orbital frequency shifts and electric field gradients.
|Number of pages||6|
|Journal||Chemistry of Materials|
|Publication status||Published - 1991|
ASJC Scopus subject areas
- Materials Chemistry
- Materials Science(all)