| Literature DB >> 18764424 |
G F Chen1, Z Li, G Li, J Zhou, D Wu, J Dong, W Z Hu, P Zheng, Z J Chen, H Q Yuan, J Singleton, J L Luo, N L Wang.
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.Entities:
Year: 2008 PMID： 18764424 DOI： 10.1103/PhysRevLett.101.057007
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161