Superconductivity at 41.0 K in the F-doped LaFeAsO1−xFx

2008/04/23 by Wei Lu, Xiao-Li Shen, Jie Yang +13
Business, Management and Accounting · Chemistry · Materials Science · Physics and Astronomy · #Chemistry #Condensed matter physics #Corporate Taxation and Avoidance #Doping #Intellectual Capital and Performance Analysis #Iron-based superconductors research #Materials science #Physics #Superconductivity #cond-mat.supr-con

paper · pdf · doi:10.1016/j.ssc.2008.07.032

published as Solid State Communications 148 (2008), pp. 168-170

arxiv created 2008/04/23 · openalex publication_date 2008/07/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Here we report the superconductivity in the LaFeAsO1-xFx system prepared by high pressure synthesis. The highest onset superconducting transition temperature (Tc) in this La-based system is 41.0 K with the nominal composition of LaFeAsO1-xFx (x = 0.6), which is higher than that reported previously by ambient pressure synthesis. The increase of Tc can be attributed to the further shrinkage of crystal lattice that causes the stronger chemical pressure on the Fe-As plane, which is induced by the increased F-doping level under high pressure synthesis.

Citations

• Possible highT c superconductivity in the Ba?La?Cu?O system
• Superconductivity at 52 K in iron based F doped layered quaternary compound Pr[O1–xFx]FeAs
• Superconductivity in the iron-based F-doped layered quaternary compound Nd[O 1 − x F x ]FeAs