University of Birmingham > Talks@bham > Theoretical Physics Journal Club and Group Meeting > Fluctuation Spectroscopy in Boron-doped Nanocrystalline Diamond Films

Fluctuation Spectroscopy in Boron-doped Nanocrystalline Diamond Films

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Rose Davies.

Superconducting fluctuations provide a way for us to probe the properties of a material with a superconducting transition. In general, by fitting theory to experiment we can find the transition temperature accurately without the need for arbitrary definitions (e.g. 10%, 50%, or 90% of normal state resistance), and to determine the dimensionality of the system. Extending these ideas to granular systems allows us to further probe their properties to determine the electron tunnelling rate and Thouless energy for a particular sample.

In this talk I present fittings to experimental measurements of the temperature dependence of electrical conductivity taken from Boron-doped Nanocrystalline Diamond films, and extract the fluctuation conductivity corrections. We observe transitions from 3D to quasi-0D and back to 3D as we approach the transition temperature. I will construct a theory describing superconducting fluctuations in granular metals to explain these observations.

This talk is part of the Theoretical Physics Journal Club and Group Meeting series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.


Talks@bham, University of Birmingham. Contact Us | Help and Documentation | Privacy and Publicity.
talks@bham is based on from the University of Cambridge.