Andrea Iorio, Alessandro Crippa, Bianca Turini, Sedighe Salimian, Matteo Carrega, Luca Chirolli, Valentina Zannier, Lucia Sorba, Elia Strambini, Francesco Giazotto, Stefan Heun
We investigate a ballistic InSb nanoflag-based Josephson junction with Nb superconducting contacts. The high transparency of the superconductor-semiconductor interfaces enables the exploration of quantum transport with parallel short and long conducting channels. Under microwave irradiation, we observe half-integer Shapiro steps that are robust to temperature, suggesting their possible nonequilibrium origin. Our results demonstrate the potential of ballistic InSb nanoflags Josephson junctions as a valuable platform for understanding the physics of hybrid devices and investigating their nonequilibrium dynamics.
Publications:
Phys. Rev. Res. 5 (2023) 033015.
Presented at:
Matteo Carrega: Half-integer Shapiro Steps in Highly Transmissive InSb
Nanoflag Josephson Junctions, CMD31 conference, Braga, Portugal, 01-06/09/2024 (invited). [Abstract] [Talk]