3 papers
astro-ph.CO2025
A sub-ppm upper limit on the cosmological variations of the fine structure constant alpha
S. Muller, A. Beelen, M. Guelin +9
Absorption spectroscopy toward high-redshift quasars provides strong constraints on the putative variation of fundamental constants of physics on cosmological time scales. The subm…
cond-mat.mes-hall2025
Tunable Josephson voltage source for quantum circuits
J. -L. Smirr, P. Manset, Ã. Ã. Girit
Noisy voltage sources can be a limiting factor for fundamental physics experiments as well as for device applications in quantum information, mesoscopic circuits, magnetometry, and…
cond-mat.mtrl-sci2025
Temperature dependent Resonant X-ray Inelastic Scattering at Ni L3-edge for NaNiO2 and LiNiO2
Quentin Jacquet, Kurt Kummer, Marie Guignard +4
LiNiO2 is a promising cathode material for Li-ion battery but its atomic and electronic structure is under debate. Indeed, two sets of Ni-O distances are identified from local stru…