Coexistence of superconductivity and antiferromagnetism in (Li0.8Fe0.2) OHFeSe
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Pages (from-to) | 325-329 |
Journal / Publication | Nature Materials |
Volume | 14 |
Issue number | 3 |
Online published | 15 Dec 2014 |
Publication status | Published - Mar 2015 |
Externally published | Yes |
Link(s)
Abstract
Iron selenide superconductors exhibit a number of unique characteristics that are helpful for understanding the mechanism of superconductivity in high-Tc iron-based superconductors more generally. However, in the case of AxFe2Se2 (A = K, Rb, Cs), the presence of an intergrown antiferromagnetic insulating phase makes the study of the underlying physics problematic. Moreover, FeSe-based systems intercalated with alkali metal ions, NH 3 molecules or organic molecules are extremely sensitive to air, which prevents the further investigation of their physical properties. It is therefore desirable to find a stable and easily accessible FeSe-based superconductor to study its physical properties in detail. Here, we report the synthesis of an air-stable material, (Li0.8Fe0.2 )OHFeSe, which remains superconducting at temperatures up to ∼40 K, by means of a novel hydrothermal method. The crystal structure is unambiguously determined by a combination of X-ray and neutron powder diffraction and nuclear magnetic resonance. Moreover, antiferromagnetic order is shown to coexist with superconductivity. This synthetic route opens a path for exploring superconductivity in other related systems, and confirms the appeal of iron selenides as a platform for understanding superconductivity in iron pnictides more broadly.
Citation Format(s)
Coexistence of superconductivity and antiferromagnetism in (Li0.8Fe0.2) OHFeSe. / Lu, X. F.; Wang, N. Z.; Wu, H. et al.
In: Nature Materials, Vol. 14, No. 3, 03.2015, p. 325-329.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review