Iron-based superconductivity extended to the novel silicide LaFeSiH

Autor:	Bernardini, F., Garbarino, G., Sulpice, A., Núñez-Regueiro, M., Gaudin, E., Chevalier, B., Méasson, M. -A., Cano, A., Tencé, S.
Rok vydání:	2017
Předmět:	Condensed Matter - Superconductivity
Zdroj:	Phys. Rev. B 97, 100504 (2018)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.97.100504
Popis:	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. Comment: 5 + epsilon pages, 7 figures, Supplemental Material on demand; v2 includes additional magnetization and resistivity data; v3 includes additional resistivity data from LaFeSiH single crystal
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1701.05010 Zobrazit plný text záznamu View this record from Arxiv