Work

Fabrication and characterization of high-temperature superconducting nanobridges using a thermal scanning probe

Year: 2026

Type: article

Abstract: In this letter, we demonstrate for the first time the creation of superconducting weak link nanojunctions using a thermal scanning probe to directly create nano-constrictions into YBa 2 Cu 3 O 7− δ (YBCO) thin film microbridges. Our method effectively reduces the critical current ( I c ) over an order of magnitude. The resulting nanobridges exhibit transport and magnetic-field dependence that are consistent with weak-link behaviour, suggestive of Josephson-like nanojunctions. This approach provides a novel and flexible method for scaling up quantum mechanical circuits that operate at liquid nitrogen temperatures. Additionally, it offers a promising pathway for modifying properties of the junctions in-situ and post fabrication.

Source: Journal of Physics Condensed Matter

DOI: 10.1088/1361-648x/ae9fa9

Authors: Ngoc My Hanh Duong, Amanuel M Berhane, Dave Mitchell, Rifat Ullah, Ting Zhang, He Zhu, Jia Du, Simon K H Lam, Emma E Mitchell, Avi Bendavid

Institutions: Commonwealth Scientific and Industrial Research Organisation, CSIRO Manufacturing

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,325

OpenAlex ID: W7204489947

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