Event Details

Condensed Matter Seminar

Superconductor-semiconductor hybrid devices are at the heart of several proposed approaches to quantum information processing, but their basic properties remain to be understood. I will present recent work we have conducted at IST Austria [1], where we embed a two-dimensional Al-InAs hybrid system in a resonant microwave circuit, enabling us to probe the breakdown of superconductivity due to an applied magnetic field. We find a fingerprint from the two-component nature of the hybrid system, and quantitatively compare with a theory that includes the contribution of intraband p ± ip pairing in the InAs, as well as the emergence of Bogoliubov-Fermi surfaces due to magnetic field. Separately resolving the Al and InAs contributions allows us to determine the carrier density and mobility in the InAs.

[1] D.Phan et al, Phys. Rev. Letts (2022)

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