English: Overview of superconducting critical temperatures for a variety of superconducting materials since the first discovery in 1911.

Colors represent different classes of materials:

This figure was originally based on the Wikimedia Commons figure "Sc history.gif" at https://commons.wikimedia.org/wiki/File:Sc_history.gif where the timeline stopped at 2010 and did not contain more than one iron-based compound.

The updated version of the figure (as of June 2026) has now been published as part the PhD thesis found on http://fys.bozack.dk/phd (or at the permanent DOI number 10.6084/m9.figshare.32690610), as figure 2.2 on page 9.

If you use this figure, please cite it as:

• Pia Jensen Ray. Figure 2.2 in PhD thesis, "Crosses and flowers: Investigating superstructures in the high-T_c superconductor La_2–xSr_xCuO_4+y". Niels Bohr Institute, Faculty of Science, University of Copenhagen, Denmark. June 2026. DOI:10.6084/m9.figshare.32690610

Older versions of the figure

(PJRay): I originally made this figure for my master's thesis (can be found at the permanent DOI number 10.6084/m9.figshare.2075680.v2: figure 2.4 on page 8), but thought it was worth sharing here. Those are the early versions of the figure, up until before 2026, though with a few edits from other users over the years.

(Gingras.ol): I modified this figure to make it up-to-date. You could also cite my PhD thesis: O. Gingras. "La supraconductivité non-conventionnelle du ruthénate de strontium: corrélations électroniques et couplage spin-orbite". Université de Montréal, Faculté des Arts et des Sciences. Montréal, Canada, 2022.