Fluctuation spectroscopy as a probe of granular superconducting diamond films
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2017-09-06 |
| Journal | Physical Review Materials |
| Authors | G. M. Klemencic, J. M. Fellows, J. M. Werrell, S. Mandal, S R Giblin |
| Institutions | University of Bristol, University of Birmingham |
| Citations | 15 |
Abstract
Section titled āAbstractāWe present resistance versus temperature data for a series of boron-doped\nnanocrystalline diamond films whose grain size is varied by changing the film\nthickness. Upon extracting the fluctuation conductivity near to the critical\ntemperature we observe three distinct scaling regions ā 3D intragrain,\nquasi-0D, and 3D intergrain ā in confirmation of the prediction of Lerner,\nVarlamov and Vinokur. The location of the dimensional crossovers between these\nscaling regions allows us to determine the tunnelling energy and the Thouless\nenergy for each film. This is a demonstration of the use of \emph{fluctuation\nspectroscopy} to determine the properties of a superconducting granular system.\n