Abstract
63Cu nuclear quadrupole resonance (NQR) experiments were preformed on six Nd-doped La 2− x Sr x CuO 4 samples. The NQR spectra show a systematic evolution with various Nd and/or Sr doping, except for La 1.48Nd 0.4Sr 0.12CuO 4. A completely different NQR spectrum was observed for the sample, which is similar to that for undoped insulator La 2CuO 4. It is speculated that a static stripe phase on the NQR time scale μs may be responsible for the anomalous spectrum.
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