2015/03/27 by Takafumi Hawai, Yusuke Nambu, Hawai, Takafumi +28
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Iron-based superconductors research #Magnetic and transport properties of perovskites and related materials #Rare-earth and actinide compounds #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el
paper · pdf · doi:10.48550/arxiv.1503.08129
12 pages, 13 figures
arxiv created 2015/03/27 · openalex publication_date 2015/03/27 · arxiv updated 2015/03/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We investigated the iron-based ladder compounds (Ba,Cs)Fe2Se3. Their parent compounds, BaFe2Se3 and CsFe2Se3, have different space groups, formal valences of Fe and magnetic structures. Electrical resistivity, specific heat, magnetic susceptibility, X-ray diffraction and powder neutron diffraction measurements were conducted to obtain temperature and composition phase diagram of this system. Block magnetism observed in BaFe2Se3 is drastically suppressed with Cs doping. In contrast, stripe magnetism observed in CsFe2Se3 is not so fragile against Ba doping. New type of magnetic structure appears in intermediate compositions, which is similar to stripe magnetism of CsFe2Se3, but inter-ladder spin configuration is different. Intermediate compounds show insulating behavior, nevertheless finite T-linear contribution in specific heat was obtained at low temperatures.