Abstract
We studied Fe-dopant effects on spin correlations in Bi1.75Pb0.35Sr1.90CuO6+δ′. Magnetic neutron elastic scattering, which is absent in a pristine sample, has been observed at incommensurate positions with an incommensurability of δ~0.2. Surprisingly, this anomalously large S follows a linear relation δ~p even in the overdoped region, unlike for La2−xSrxCuO4. We discuss this specific feature observed in the overdoped phase from a dynamical stripe viewpoint.
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