3 papers
cond-mat.mtrl-sci2026
Quadrupole formation and coupling to magnetic and structural degrees of freedom in the double perovskites BaMgReO and BaNaOsO
Francesco Martinelli, Claude Ederer
We investigate the interplay between charge, magnetic, and structural degrees of freedom in the isostructural and isoelectronic double-perovskites BaMgReO and Ba…
cond-mat.mtrl-sci2025
Multipoles as quantitative order parameters for altermagnetic spin splitting
Francesco Martinelli, Anouk Droux, Claude Ederer
We establish a quantitative relation between the altermagnetic spin-splitting and different higher order multipoles of the charge and magnetization density around the magnetic atom…
physics.comp-ph2024
Designing Optically Addressable Nitrogen-Vacancy Centers in Ultra-Small Nanodiamonds: Insights from First-Principles Calculations
Arpan Kundu, Francesco Martinelli, Giulia Galli
Ultrasmall nanodiamonds (USNDs) are promising platforms for fluorescent and quantum sensing applications. Here we present first-principles electronic structure calculations of colo…