Superconductivity at 25 K in hole-doped (La1-xSrx)OFeAs
By H. Wen, G. Mu, L. Fang, Huan Yang, Xiyu Zhu. 2008
443 citations recorded by the source corpus.
By partially substituting the tri-valence element La with di-valence element Sr in LaOFeAs, we introduced holes into the system. For the first time, we successfully synthesized the hole-doped new superconductors (La1- xSrx)OFeAs. The maximum superconducting transition temperature at about 25 K was observed at a doping level of x=0.13. It is evidenced by Hall effect measurements that the conduction in this type of material is dominated by hole-like charge carriers, rather than electron-like ones. Together with the data of the electron-doped system La(O1- xFx)FeAs, a generic phase diagram is depicted and is revealed to be similar to that of the cuprate superconductors.
Subfields: Biomedical Engineering, Condensed Matter Physics, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/327dde87af202acf1fa643aacd13d5f486d711d5
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Citations in the corpus
- Superconductivity in iron compounds (2011, background): “Hole doping has been primarily studied in Ln1 xSrxFeAsO, with Ln ¼ La (Tc ¼ 25 K, Wen et al., 2008), Pr (Tc ¼ 15 K, Mu et al., 2009b; Ju et al., 2009), and Nd (Tc ¼ 13:5 K, Kasperkiewicz et al., 2009).”
- Emergence of charge density wave domain walls above the superconducting dome in 1T-TiSe2 (2013, unknown): “Also in iron-based superconductors LaO1−FFeAs, La1−SrOFeAs, and Ba1−KFe2As2, superconductivity emerges also in proximity of antiferromagnetic instability [4, 5, 6].”