Séminaire IP2I: GLIMPSE: Graphene-based Light Invisible Matter Particle SEarch

Séminaire réalisé par Jong-Chul Park – Associate Professor – Chungnam National University (CNU)

We introduce a new dark-matter direct-detection strategy, GLIMPSE, that will enable the search of keV-range super-light dark matter, adopting a graphene-based Josephson-junction (GJJ) device. It has been recently demonstrated in the laboratory that the GJJ device can have sensitivity to sub-meV energy deposits. We investigate detection prospects with pg-, ng-, and μg-scale detectors by calculating the scattering rate between dark matter and the  π-bond (free) electrons confined in two-dimensional graphene. Due to the constrained scattering feature, we find that the expected signal rate will show dark-matter incident direction dependence, which can be thus utilized for in situ validation of observed signals. Finally, the status of GLIMPSE will be discussed.

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