Niobium oxides and niobates physical properties: Review and prospects
For the last 75 years several studies have been reporting on the physical properties of
niobium oxides, but there is still many contradictory, inconsistent and insufficient information …
niobium oxides, but there is still many contradictory, inconsistent and insufficient information …
Tuning microwave losses in superconducting resonators
A Gurevich - Superconductor Science and Technology, 2023 - iopscience.iop.org
The performance of superconducting resonators, particularly cavities for particle
accelerators and micro cavities and thin film resonators for quantum computations and …
accelerators and micro cavities and thin film resonators for quantum computations and …
Investigation of Microwave Loss Induced by Oxide Regrowth in High-Q Niobium Resonators
The coherence of state-of-the-art superconducting qubit devices is predominantly limited by
two-level-system defects, which are found primarily at amorphous interface layers. Reducing …
two-level-system defects, which are found primarily at amorphous interface layers. Reducing …
[HTML][HTML] RF surface resistance tuning of superconducting niobium via thermal diffusion of native oxide
Recently, Nb superconducting radio frequency cavities vacuum heat treated between 300
and 400 C for a few hours have exhibited very high quality factors (∼ 5× 10 10 at 2.0 K) …
and 400 C for a few hours have exhibited very high quality factors (∼ 5× 10 10 at 2.0 K) …
Ultralow surface resistance via vacuum heat treatment of superconducting radio-frequency cavities
We report on an effort to improve the performance of superconducting radiofrequency
cavities by using heat treatment in a temperature range sufficient to dissociate the natural …
cavities by using heat treatment in a temperature range sufficient to dissociate the natural …
Theory of RF superconductivity for resonant cavities
A Gurevich - Superconductor Science and Technology, 2017 - iopscience.iop.org
An overview of a theory of electromagnetic response of superconductors in strong radio-
frequency (RF) electromagnetic fields is given with the emphasis on applications to …
frequency (RF) electromagnetic fields is given with the emphasis on applications to …
Corrosion behavior and surface film characterization of TaNbHfZrTi high entropy alloy in aggressive nitric acid medium
J Jayaraj, C Thinaharan, S Ningshen, C Mallika… - Intermetallics, 2017 - Elsevier
Corrosion behavior of TaNbHfZrTi high-entropy alloy (HEA) was investigated in nitric and
fluorinated nitric acid at ambient (27° C) and boiling (120° C) conditions. The alloy …
fluorinated nitric acid at ambient (27° C) and boiling (120° C) conditions. The alloy …
The investigation of NbO2 and Nb2O5 electronic structure by XPS, UPS and first principles methods
Z Weibin, W Weidong, W Xueming… - Surface and …, 2013 - Wiley Online Library
In this paper, the electronic structures of NbO2 and Nb2O5 are theoretically and
experimentally analyzed. The oxides in the samples are mainly consisted of NbO2 and NbO …
experimentally analyzed. The oxides in the samples are mainly consisted of NbO2 and NbO …
Surface oxides, carbides, and impurities on RF superconducting Nb and Nb3Sn: A comprehensive analysis
Surface structures on radio-frequency (RF) superconductors are crucially important in
determining their interaction with the RF field. Here we investigate the surface compositions …
determining their interaction with the RF field. Here we investigate the surface compositions …
Microscopic relaxation channels in materials for superconducting qubits
Despite mounting evidence that materials imperfections are a major obstacle to practical
applications of superconducting qubits, connections between microscopic material …
applications of superconducting qubits, connections between microscopic material …