Possible ferromagnetic phase in non-superconducting heavily overdoped cuprates of Bi-2201

27th International Conference on Low Temperature Physics

Kurashima, K.^1 ; Adachi, T.^2 ; Suzuki, K.M.^1,3 ; Fukunaga, Y.^1 ; Kawamata, T.^1 ; Noji, T.^1 ; Koike, Y.^1

Department of Applied Physics, Tohoku University, Sendai, Japan^1

Department of Engineering and Applied Sciences, Sophia University, Tokyo, Japan^2

Institute for Materials Research, Tohoku University, Sendai, Japan^3

关键词: Ferromagnetic correlations;    Ferromagnetic fluctuation;    Ferromagnetic phase;    Ferromagnetic transitions;    High magnetic fields;    In-plane electrical resistivity;    Magnetization curves;    Temperature dependence;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/568/2/022003/pdf
DOI  :  10.1088/1742-6596/568/2/022003

来源: IOP

【 摘 要 】

In order to investigate The possible ferromagnetic phase in The non-superconducting (non-SC) heavily overdoped (HOD) regime of high-Tccuprates suggested by Sonier et al. [Proc. Natl. Acad. Sci. USA 107, 17131 (2010)] in La2-xSrxCuO4, both The magnetization and in-plane electrical resistivity, ρab, have been measured using single crystals of Bi1.76Pb0.35Sr1.89CuO6+δcovering a wide range of hole concentration. Magnetization curves in The non-SC HOD regime have shown a tendency to be saturated in high magnetic fields at low temperatures, which is probably a precursor of The possible ferromagnetic transition at a lower temperature. In addition, it has been found that ρabexhibits The temperature dependence being proportional to T4.3, which is characteristic of a metal with two-dimensional ferromagnetic fluctuations, in a wide range of hole concentration from The superconducting overdoped to The non-SC HOD regime. It has been concluded that two-dimensional ferromagnetic correlation develops at low temperatures in HOD Bi-2201 and that therefore The development of The ferromagnetic correlation is probably an intrinsic feature in The HOD cuprates.