期刊
PHYSICAL REVIEW B
卷 83, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.83.060510
关键词
-
资金
- Natural Science Foundation of China
- Ministry of Science and Technology of China [2011CBA00100, 2010CB923002]
- Chinese Academy of Sciences
We report on low-temperature scanning tunneling microscopy and spectroscopy (STM) studies of the electronic structure of single-crystalline Ba0.6K0.4Fe2As2. Multiple superconducting gaps are observed in the density of states (DOS) and the sizes of the two dominant gaps Delta(L) and Delta(S) are 7.6 and 3.3 meV, respectively. The flat bottom of the DOS spectra near zero bias indicates the nodeless feature of the gaps, while the global fitting to the spectra definitely requires the anisotropy. The nodeless gaps with finite anisotropy revealed in our STM data agree well with the expectations of an extended s-wave superconductivity.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据