Phase-dependent supercurrent and microwave dissipation of HgTe quantum well Josephson junctions
Year: 2025
Type: article
Abstract: Future applications of semiconductor-superconductor heterostructures in quantum information science rely on careful engineering of proximity-induced quantum states. The authors apply here microwave admittance measurements to extract the current-phase relation and phase-dependent microwave dissipation in gated HgTe quantum well Josephson junctions. The experimental results are in good agreement with modeling of the Andreev bound state spectrum based on tight-binding simulations of the Bogoliubov--de Gennes equations. This allows to disentangle the effects of interface transparency, disorder, and magnitude of the superconducting energy gap.
Institution: University of Würzburg
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4408185994