Séminaire

Vendredi 2 Décembre 2022 à 11h00.

Diamond and its transformation due to particle irradiation

''Diamond continues to be at the forefront of exotic applications in Physics. An interesting factor in the application of diamond is the interest in its flaws at the atomistic level. Foreign atoms at substitutional or interstitial sites of the diamond structure can transform the material from an insulator to a semiconductor. Defect complexes such as the negative Nitrogen vacancy centre can act as single photon sources and has applications in emergent quantum technologies. Understanding how to introduce defects in diamond in a controllable manner is a crucial factor to exploit its potential. Because defects in diamond diffuse at temperatures and rates which are different from conventional semiconductor materials, solid state epitaxial regrowth in diamond does not occur. This means that diamond reconstruction does not occur if a critical defect density is introduced in the diamond by ion implantation. This deterrent for doping diamond has become an area od interest in creating conducting channels in diamond surrounded by diamond material. In this presentation I will present an overview of how we used accelerator-based technologies to change the properties of diamond and measure the optical and elastic properties of the changes that take place in the composite that is created.''