2008/09/18 by B. Barbiellini, T. Jarlborg, B Barbiellini +1
Economics, Econometrics and Finance · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Economic and Environmental Valuation #Health Systems, Economic Evaluations, Quality of Life #Healthcare Policy and Management #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.mtrl-sci #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.101.157002
published as Phys. Rev. Lett. 101, 157002 (2008) · 4 pages, 5 figures, accepted for publication in Physical Review Letters
arxiv created 2008/09/18 · openalex publication_date 2008/10/10 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/21
Band calculations for supercells of La((2-x))Ba(x)CuO(4) show that the rigid band model for doping is less adequate than what is commonly assumed. In particular, weak ferromagnetism can appear locally around clusters of high Ba concentration. The clustering is important at large dilution, and averaged models for magnetism, such as the virtual crystal approximation, are unable to stabilize magnetic moments. These results give support to the idea that weak ferromagnetism can be the cause of the destruction of superconductivity at high hole doping.