Journal
CHINESE PHYSICS B
Volume 21, Issue 4, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1674-1056/21/4/047601
Keywords
Mossbauer spectroscopy; iron-selenide; superconductivity
Categories
Funding
- National Natural Science Foundation of China [10975066]
Ask authors/readers for more resources
Mossbauer spectroscopy was used to probe the site-specific information of a K0.84Fe1.99Se2 superconductor. A spin excitation gap, Delta E approximate to 5.5 meV, is observed by analyzing the temperature dependence of the hyperfine magnetic field (HMF) at the iron site within the spin wave theory. Using the simple model suggested in the literature, the temperature dependence of the HMF is well reproduced, suggesting that, below room temperature, the alkali metal intercalated iron selenide superconductors can be regarded as ferromagnetically coupled spin blocks that interact with each other antiferromagnetically to form the observed checkerboard-like magnetic structure.
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