Advances in SRF technology over the last 40 years allowed achieving accelerating
gradients~ 50​ MV/m corresponding to peak surface magnetic fields close to the theoretical …

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) …

We suggest a program to establish theoretical performance limits of srf cavities using
modern theories of nonequilibrium superconductivity under a strong electromagnetic field …

Surface structures on radio-frequency (RF) superconductors are crucially important in
determining their interaction with the RF field. Here we investigate the surface compositions …

Niobium is one of the most researched superconductors, both theoretically and
experimentally. It is enormously significant in all branches of superconducting applications …

We generalize a native Nb 2 O 5 dissolution model [G. Ciovati, Appl. Phys. Lett. 89, 022507
(2006)] to sequential overlayer dissolutions, multilayer dissolution, and realistic temperature …

We investigate how a combination of a nonmagnetic impurity scattering rate γ and finite
subgap states parametrized by Dynes Γ affects various physical quantities relevant to …

Superconducting radio-frequency (SRF) resonator cavities provide extremely high quality
factors> 1010 at 1–2 GHz and 2 K in large linear accelerators of high-energy particles. The …

Niobium thin films are key components of superconducting microwave resonators. Interest in
these devices has increased dramatically because of their application in quantum systems …

The superheating field Hsh of the Meissner state is thought to determine the theoretical field-
limit of superconducting accelerator cavities. We investigate Hsh of semi-infinite …