Superconducting properties of the Fe-based layered superconductor LaFeAsO0.9F0.1-δ

被引：153

作者：

Chen, G. F. ^{[1
]}

Li, Z. ^{[1
]}

Li, G. ^{[1
]}

Zhou, J. ^{[1
]}

Wu, D. ^{[1
]}

Dong, J. ^{[1
]}

Hu, W. Z. ^{[1
]}

Zheng, P. ^{[1
]}

Chen, Z. J. ^{[1
]}

Yuan, H. Q. ^{[2
,3
]}

Singleton, J. ^{[2
]}

Luo, J. L. ^{[1
]}

Wang, N. L. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[2] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA

[3] Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.101.057007

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 2 Delta/kT(c)approximate to 3.5-4.2. Furthermore, we show that the new superconductor has electron-type conducting carriers with a rather low-carrier density.

引用

页数：4

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