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- Centre National de la Recherche ScientifiqueFR194 papers
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10 papers · 2 filters
Two Ising-like magnetic excitations in a single-layer cuprate superconductor
Yuan Li, G. Yu, M. K. Chan +10
There exists increasing evidence that the phase diagram of the high-transition temperature (Tc) cuprate superconductors is controlled by a quantum critical point. One distinct theo…
Field Dependence of the Superconducting Basal Plane Anisotropy of TmNi2B2C
P. Das, J. M. Densmore, C. Rastovski +7
The superconductor TmNi2B2C possesses a significant four-fold basal plane anisotropy, leading to a square Vortex Lattice (VL) at intermediate fields. However, unlike other members…
Iron spin-reorientation transition in NdFeAsO
A. Marcinkova, T. C. Hansen, J. W. G. Bos
The low-temperature magnetic structure of NdFeAsO has been revisited using neutron powder diffraction and symmetry analysis using the Sarah representational analysis program. Four…
Polarized neutron scattering studies of magnetic excitations in electron-overdoped superconducting BaFeNiAs
Mengshu Liu, C. Lester, Jiri Kulda +5
We use polarized inelastic neutron scattering to study low-energy spin excitations and their spatial anisotropy in electron-overdoped superconducting BaFeNiAs$_{2…
Similar zone-center gaps in the low-energy spin-wave spectra of NaFeAs and BaFe2As2
J. T. Park, G. Friemel, T. Loew +10
We report results of inelastic-neutron-scattering measurements of low-energy spin-wave excitations in two structurally distinct families of iron-pnictide parent compounds: Na(1-δ)F…
Negative thermal expansion and antiferromagnetism in the actinide oxypnictide NpFeAsO
T. Klimczuk, H. C. Walker, R. Springell +12
A neptunium analogue of the LaFeAsO tetragonal layered compound has been synthesized and characterized by a variety of experimental techniques. The occurrence of long-range magneti…