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physics.app-ph2021
Internal Friction Measures to Study Precipitates Formation in EP and N-Doped Bulk Nb for SRF Applications
Tiziana Spina, Anna Grassellino, Alexander Romanenko
Main focus of this study is the investigation of thermodynamics phenomena responsible for the High Field Q Slope (HFQS) in SRF cavities by Internal Friction (IF) measurement. Mecha…
physics.app-ph2021★ 20 cited
Oxygen Vacancies in Niobium Pentoxide as a Source of Two-Level System Losses in Superconducting Niobium
Daniel Bafia, Akshay Murthy, Anna Grassellino +1
We identify a major source of quantum decoherence in three-dimensional superconducting radio-frequency (SRF) resonators and two-dimensional transmon qubits composed of oxidized nio…