Binary kagome superconducting candidates hosting topological electronic states

Binary kagome compounds emerge as an unexpectedly rich frontier for topological superconductivity. Through a high-throughput first-principles search spanning three structural families, the authors identify 84 phonon-mediated superconducting candidates with estimated ${T}_{c}$ above 3K; seven surpass the approximately 9K benchmark for ambient-pressure kagome superconductors. The leading candidate, Ti${}_{3}$Si, reaches an estimated $T\phantom{\rule{0}{0ex}}\mathrm{c}$ of 15.2K and hosts nodal-line-derived drumhead surface states, while NbBi ($T\phantom{\rule{0}{0ex}}\mathrm{c}$ = 4.0K) combines a kagome flat band with ${\mathbb{Z}}_{2}$-derived Dirac-cone surface states near the Fermi level. This map establishes chemically simple, tunable platforms where superconductivity and diverse topological states converge, offering especially compelling targets for synthesis and experimental discovery.