Superconducting Properties of the Fe-Based Layered SuperconductorLaFeAsO0.9F0.1−δ

2008/03/31 by Gui Chen, G. F. Chen, Z. Li +19 · 9 citations
Business, Management and Accounting · Materials Science · Physics and Astronomy · #Condensed matter physics #Corporate Taxation and Avoidance #Doping #Iron-based superconductors research #Materials science #Phase (matter) #Physics #Quantum mechanics #Superconductivity #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.101.057007

published as Phys. Rev. Lett. 101, 057007 (2008) · 4 pages, 5 figures, Phys. Rev. Lett. (accepted)

arxiv created 2008/06/28 · openalex publication_date 2008/07/31 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We have employed a new route to synthesize single phase F-doped LaOFeAs compound and confirmed the superconductivity above 20 K in this Fe-based system. We show that the new superconductor has a rather high upper critical field of over 50 T. A clear signature of superconducting gap opening below T(c) was observed in the far-infrared reflectance spectra, with 2Delta/kT(c) approximately 3.5-4.2. Furthermore, we show that the new superconductor has electron-type conducting carriers with a rather low-carrier density.

Citations

• Possible highT c superconductivity in the Ba?La?Cu?O system
• Low-Energy Electrodynamics of Superconducting Diamond
• Two-band superconductivity in LaFeAsO0.89F0.11 at very high magnetic fields

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• A structural study of the hole-doped superconductors Pr1−xSrxFeAsO
• Universal behavior of the upper critical field in iron-based superconductors
• Orbital and spin effects for the upper critical field in As-deficient disordered Fe pnictide superconductors
• Common Features in Electronic Structure of the Oxypnictide Superconductors from Photoemission Spectroscopy