Iron-based superconductivity extended to the novel silicide LaFeSiH
CANO, Andrés
Théorie de la Matière Condensée [NEEL - TMC]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
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Théorie de la Matière Condensée [NEEL - TMC]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Language
en
Article de revue
This item was published in
Physical Review B. 2018-03, vol. 97, n° 10, p. 100504(R)
American Physical Society
English Abstract
We report the synthesis and characterization of the novel silicide LaFeSiH displaying superconductivity with onset at 11 K. We find that this pnictogen-free compound is isostructural to LaFeAsO, with a similar low-temperature ...Read more >
We report the synthesis and characterization of the novel silicide LaFeSiH displaying superconductivity with onset at 11 K. We find that this pnictogen-free compound is isostructural to LaFeAsO, with a similar low-temperature tetragonal to orthorhombic distortion. Using density functional theory we show that this system is also a multiband metal in which the orthorhombic distortion is likely related to single-stripe antiferromagnetic order. Electrical resistivity and magnetic susceptibility measurements reveal that these features occur side-by-side with superconductivity, which is suppressed by external pressure.Read less <
Origin
Hal imported