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

Huican Mao; Cao Wang; Helen E. Maynard-Casely; Qingzhen Huang; Zhicheng Wang; Guanghan Cao; Shiliang Li; Huiqian Luo

doi:10.1209/0295-5075/117/57005

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arXiv · 1704.03119

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

Huican Mao·Cao Wang·Helen E. Maynard-Casely·Qingzhen Huang·Zhicheng Wang·Guanghan Cao·Shiliang Li·Huiqian Luo

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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.

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Huican Mao, Cao Wang, Helen E. Maynard-Casely, Qingzhen Huang, Zhicheng Wang, Guanghan Cao, Shiliang Li, Huiqian Luo. 2017-04-11. Neutron powder diffraction study on the iron-based nitride superconductor ThFeAsN. https://doi.org/10.1209/0295-5075/117/57005

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