Journal
PHYSICAL REVIEW B
Volume 83, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.83.020501
Keywords
-
Funding
- Japan Society for the Promotion of Science (JSPS)
- TRiP-JST
- CREST-JST
- Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan
- Chinese Academy of Sciences (CAS)
- National Science Foundation of China (NSFC)
- Ministry of Science and Technology (MOST) of China
- US National Science Foundation (NSF)
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [800641] Funding Source: National Science Foundation
Ask authors/readers for more resources
We have performed angle-resolved photoemission spectroscopy on the overdoped Ba0.3K0.7Fe2As2 superconductor (T-c = 22 K). We demonstrate that the superconducting (SC) gap on each Fermi surface (FS) is nearly isotropic whereas the gap value varies from 4.4 to 7.9 meV on different FSs. By comparing with under-and optimally doped Ba1-xKxFe2As2, we find that the gap value on each FS nearly scales with T-c over a wide doping range (0.25 <= x <= 0.7). Although the FS volume and the SC gap magnitude are strongly doping dependent, the multiple nodeless gaps can be commonly fitted by a single gap function assuming pairing up to the second nearest neighbor, suggesting the universality of the short-range pairing states with the s(+/-)-wave symmetry.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available