Emergence of magnetic modulations in the overdoped phase of Bi2201 by Fe doping

Feドープによる過剰ドープ領域Bi2201の磁気秩序の発現

平賀 晴弘*; 脇本 秀一  ; 武田 全康  ; 加倉井 和久; 山田 和芳*

Hiraka, Haruhiro*; Wakimoto, Shuichi; Takeda, Masayasu; Kakurai, Kazuhisa; Yamada, Kazuyoshi*

Recently, we succeeded in growing large single crystals of Fe and Pb co-doped superconducting compound Bi2201, and diffuse scatterings were discovered at incommensurate positions around the antiferromagnetic wave vector below K with unpolarized neutron. We have carried out polarized neutron scattering experiments on TAS-1 at JRR-3, and confirmed that the incommensurate diffuse scattering has the magnetic origin. This is the first observation of magnetic order in the Bi2201 compounds.