CE30 - Physique de la matière condensée et de la matière diluée

Identifying Majorana Modes using Atomic Scale Shot-Noise – MMNOISE

Submission summary

Using atomic scale current noise measurements, we will unambiguously establish the presence or absence of Majorana bound states (MBS) that have been suggested to exist on individual Fe impurities, vortex cores and 1D crystalline defects in the iron based superconductor Fe(Se,Te). Unlike other non-invasive detection techniques, theoretical calculations show that the current noise of MBS is distinctly different from other in-gap modes. Preliminary measurements on the latter with our MHz-enabled scanning tunnelling microscope show that we can access the relevant tunnelling regime, have sufficient signal-to-noise to reliably carry out the measurement and confirm the theoretical predictions for these modes. If MBS are indeed present in one or more of the proposed scenarios, we will directly proceed to attempt readout and manipulation of the MBS, for which numerous proposals have been put forth that are feasible with the proposed system and our setup.

Project coordination

Freek Massee (Laboratoire de Physique des Solides)

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.

Partner

LPS Laboratoire de Physique des Solides

Help of the ANR 269,478 euros
Beginning and duration of the scientific project: September 2021 - 48 Months

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