Neutron powder diffraction study on the iron-based nitride superconductor ThFeAsN

Abstract

We report neutron diffraction and transport results on the newly discovered superconducting nitride ThFeAsN with $T_c=$ 30 K. No magnetic transition, but a weak structural distortion around 160 K, is observed cooling from 300 K to 6 K. Analysis on the resistivity, Hall transport and crystal structure suggests this material behaves as an electron optimally doped pnictide superconductors due to extra electrons from nitrogen deficiency or oxygen occupancy at the nitrogen site, which together with the low arsenic height may enhance the electron itinerancy and reduce the electron correlations, thus suppress the static magnetic order.

arXiv comment4 pages, 4 figures, Accepted by EPL

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Cited by in corpus (9)

• A brief review on muSR studies of unconventional Fe and Cr-based superconductors
• Multigap superconductivity in ThAsFeN investigated using muSR measurements
• BaTh${}_2$Fe${}_4$As${}_4$(N${}_{0.7}$O${}_{0.3}$)${}_2$: An Iron-Based Superconductor Stabilized by Inter-Block-Layer Charge Transfer
• Pressure induced Lifshitz transition in ThFeAsN
• Peculiar Phase Diagram with Isolated Superconducting Regions in ThFeAsN${}_{1-x}$O${}_x$
• Electronic structure, lattice dynamics and magnetism of new ThXAsN (X=Fe,Co,Ni) superconductors: A First Principles Study
• Doping effects of Cr on the physical properties of BaFe${}_{1.9-x}$Ni${}_{0.1}$Cr${}_x$As${}_2$
• Exploring multichannel superconductivity in ThFeAsN
• Neutron powder diffraction study on the non-superconducting phases of ThFeAsN${}_{1-x}$O${}_x$ ($x=0.15,0.6$) iron pnictide