The magnetic field dependence of the superconductivity in nanocrystalline boron doped diamond thin films is reported. Evidence of a glass state in the phase diagram is presented, as demonstrated by electrical resistance and magnetic relaxation measurements. The position of the phase boundary in the H-T plane is determined from resistance data by detailed fitting to zero-dimensional fluctuation conductivity theory. This allows determination of the boundary between resistive and non-resistive behavior to be made with greater precision than the standard ad hoc onset/midpoint/offset criterion.
@article{arxiv.1803.01637,
title = {Observation of a superconducting glass state in granular superconducting diamond},
author = {G. M. Klemencic and J. M. Fellows and J. M. Werrell and S. Mandal and S. R. Giblin and R. A. Smith and O. A. Williams},
journal= {arXiv preprint arXiv:1803.01637},
year = {2018}
}