Detecting Induced p ±i p Pairing at the Al-InAs Interface with a Quantum Microwave Circuit
Abstract
Superconductor-semiconductor hybrid devices are at the heart of several proposed approaches to quantum information processing, but their basic properties remain to be understood. We embed a two-dimensional Al-InAs hybrid system in a resonant microwave circuit, probing 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 ±i p 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.
- Publication:
-
Physical Review Letters
- Pub Date:
- March 2022
- DOI:
- 10.1103/PhysRevLett.128.107701
- arXiv:
- arXiv:2107.03695
- Bibcode:
- 2022PhRvL.128j7701P
- Keywords:
-
- Condensed Matter - Superconductivity;
- Condensed Matter - Mesoscale and Nanoscale Physics;
- Quantum Physics
- E-Print:
- 7+20 pages, 5+17 figures