Superconductivity at 52 K in hydrogen-substituted LaFeAsO1-xHx under high pressure
نویسندگان
چکیده
The 1111-type iron-based superconductor LnFeAsO(1-x)Fx (Ln stands for lanthanide) is the first material with a Tc above 50 K, other than cuprate superconductors. Electron doping into LaFeAsO by H, rather than F, revealed a double-dome-shaped Tc-x diagram, with a first dome (SC1, 0.0550 K observed in RE-1111 compounds (RE: Pr, Sm, and Gd) at ambient pressure is the merging of SC1 and SC2.
منابع مشابه
Pressure effect on iron-based superconductor LaFeAsO1−xHx: Peculiar response of 1111-type structure
A systematic study of the crystal structure of a layered iron oxypnictide LaFeAsO1-xHx as a function of pressure was performed using synchrotron X-ray diffraction. This compound exhibits a unique phase diagram of two superconducting phases and two parent phases. We established that the As-Fe-As angle of the FeAs4 tetrahedron widens on the application of pressure due to the interspace between th...
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عنوان ژورنال:
دوره 5 شماره
صفحات -
تاریخ انتشار 2015