Data for: In-plane magnetic field-driven symmetry breaking in topological insulator-based three-terminal junctionshttps://doi.org/10.26165/JUELICH-DATA/CX10EOKölzer, JonasMoors, KristofJalil, Abur R.Zimmermann, ErikRosenbach, DanielKibkalo, LidiaSchüffelgen, PeterMussler, GregorGrützmacher, DetlevSchmidt, Thomas L.Lüth, HansSchäpers, ThomasJülich DATA2021-09-072022-03-15T13:32:48ZThis data set includes the raw data of the three-terminal junction current measurements and the Python source code (incl. a Jupyter notebook) for the quantum transport simulations (based on Kwant) that (re)produce the results presented in Figs. S4-S9.Physicstopological insulatorsmagnetotransportnanoribbonsarXiv, 2012.15118, https://arxiv.org/abs/2012.15118Moors, Kristof2021-09-07CC0CC0 Waiver