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6 papers · 2 filters
First-principles study of magnetism, lattice dynamics, and superconductivity in LaFeSiH
Linda Hung, Taner Yildirim
The structural, electronic, magnetic, and vibrational properties of LaFeSiH for between 0 and 1 are investigated using density functional calculations. We find that the ele…
Local breaking of four-fold rotational symmetry by short-range magnetic order in heavily overdoped Ba(FeCu)As
Weiyi Wang, Yu Song, Ding Hu +6
We investigate Cu-doped Ba(FeCu)As with transport, magnetic susceptibility, and elastic neutron scattering measurements. In the heavily Cu-doped regime where lo…
Unexpected Enhancement of Three-Dimensional Low-Energy Spin Correlations in Quasi-Two-Dimensional FeTeSe System at High Temperature
Zhijun Xu, J. A. Schneeloch, Jinsheng Wen +8
We report inelastic neutron scattering measurements of low energy ( meV) magnetic excitations in the "11" system FeTeSe. The spin correlations ar…
Neutron powder diffraction study on the iron-based nitride superconductor ThFeAsN
Huican Mao, Cao Wang, Helen E. Maynard-Casely +5
We report neutron diffraction and transport results on the newly discovered superconducting nitride ThFeAsN with 30 K. No magnetic transition, but a weak structural distorti…
Uniaxial pressure effect on the magnetic ordered moment and transition temperatures in BaFeAs (Co, Ni)
David W. Tam, Yu Song, Haoran Man +22
We use neutron diffraction and muon spin relaxation to study the effect of in-plane uniaxial pressure on the antiferromagnetic (AF) orthorhombic phase in BaFeAs and its Co-…
Spin excitations and the Fermi surface of superconducting FeS
Haoran Man, Jiangang Guo, Rui Zhang +17
High-temperature superconductivity occurs near antiferromagnetic instabilities and nematic state. Debate remains on the origin of nematic order in FeSe and its relation with superc…