Data and code for "smash junction" papers

This repository

This repository contains data, code, and other materials for the following three papers:

• Planar Josephson Junctions Templated by Nanowire Shadowing ("technique paper",  arXiv:2211.04130),
• Large second-order Josephson effect in planar superconductor-semiconductor junctions ("2nd harmonic", arXiv:2211.07119, SciPost Phys. 16, 030 (2024)),
• Missing odd-order Shapiro steps do not uniquely indicate fractional Josephson effect ("missing steps", arXiv:2211.08710).

ZIP files

• [Full raw data and summaries] ***.zip: Full original raw data, measurement and instrument logs, and summary slides (plotted extended data beyond paper figures) zipped for different cooldowns.
• [Paper figures] ***.zip:  Paper figures, processed figure data, and data-processing code for paper figures.
• Other ZIP files with self-explaining names.

Data formats

• MTX: A simple 2D/3D matrix format developed for Spyview.
• DAT: Plain-text tabular data. DAT and MTX files can be plotted with Spyview, qtplot (a portable version for Windows can be downloaded here), Jupyter notebooks in ZIP files or here.
• SET: Instrument settings.
• PY:  Measurement scripts.
• IPYNB: Jupyter notebooks with code and figures. They can be previewed on this page.