Wagga2026/AC2MP2026

Direct writing of Josephson-like nanojunctions on high-Tc superconductors using a thermal scanning probe

10 Feb 2026, 11:45

15m

Convention Centre

Contributed Oral Superconductivity Superconductivity

Speaker

Hanh Duong (CSIRO)

Description

We demonstrate a direct-write method for creating weak-link Josephson junctions in high-Tc superconducting thin films using thermal scanning probe lithography (t-SPL). A nanoscale heated tip locally modifies the superconductor with sub-10-nm precision, forming constrictions without resists, ion exposure, or multi-step patterning. The resulting nanobridges exhibit Josephson-like characteristics, including non-dissipative supercurrent transport and magnetic-field interference. This single-step thermal patterning approach offers a clean, resist-free fabrication pathway toward scalable quantum devices.