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Fe-doping effects on magnetism in hole-type superconductors of (Bi,Pb)$$_{2}$$Sr$$_{2}$$CuO$$_{6}$$

Hiraka, Haruhiro*; Wakimoto, Shuichi; Takeda, Masayasu; Kakurai, Kazuhisa; Matsumura, Daiju; Nishihata, Yasuo; Mizuki, Junichiro; Yamada, Kazuyoshi*

We studied Fe-dopant effects on spin correlations in Bi$$_{1.75}$$Pb$$_{0.35}$$Sr$$_{1.90}$$CuO$$_{6+delta'}$$. Magnetic neutron elastic scattering, which is absent in a pristine sample, has been observed at incommensurate positions with an incommensurability of $$delta$$$$sim$$0.2. Surprisingly, this anomalously large $$delta$$ follows a linear relation $$delta$$$$sim$$$$p$$ even in the overdoped region, unlike for La$$_{2-x}$$Sr$$_{x}$$CuO$$_{4}$$. We discuss this specific feature observed in the overdoped phase from a dynamical stripe viewpoint.

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