CC BY 4.0 UnportedRuf, J.P.Paik, H.Schreiber, N.J.Nair, H.P.Miao, L.Kawasaki, J.K.Nelson, J.N.Faeth, B.D.Lee, Y.Goodge, B.H.Pamuk, B.Fennie, C.J.Kourkoutis, L.F.Schlom, D.G.Shen, K.M.2023-03-242023-03-242021https://oa.tib.eu/renate/handle/123456789/11752http://dx.doi.org/10.34657/10786Superconductivity is among the most fascinating and well-studied quantum states of matter. Despite over 100 years of research, a detailed understanding of how features of the normal-state electronic structure determine superconducting properties has remained elusive. For instance, the ability to deterministically enhance the superconducting transition temperature by design, rather than by serendipity, has been a long sought-after goal in condensed matter physics and materials science, but achieving this objective may require new tools, techniques and approaches. Here, we report the transmutation of a normal metal into a superconductor through the application of epitaxial strain. We demonstrate that synthesizing RuO2 thin films on (110)-oriented TiO2 substrates enhances the density of states near the Fermi level, which stabilizes superconductivity under strain, and suggests that a promising strategy to create new transition-metal superconductors is to apply judiciously chosen anisotropic strains that redistribute carriers within the low-energy manifold of d orbitals.enghttps://creativecommons.org/licenses/by/4.0500540530metalrutheniumruthenium dioxidetitanium dioxidetransition elementArticle