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Superconductivity (SC) was experimentally observed for the first time inantimony polyhydride. The diamond anvil cell combined with laser heating systemwas used to synthesize the antimony polyhydride sample at high pressure andhigh temperature conditions. In-situ high pressure transport measurements asfunction of temperature with applied magnet are performed to study the SCproperties. It was found that the antimony polyhydride samples showsuperconducting transition with critical temperature $T_c = 116^\circ$K at 184GPa. The investigation of SC at magnetic field revealed that thesuperconducting coherent length ~40 angstroms based on Ginzburg Landau (GL)equation. Antimony polyhydride superconductor has the second highest Tc inaddition to sulfur hydride among the polyhydrides of elements from main groupIIIA to VIIA in periodic table.

Superconductivity with Tc 116 K discovered in antimony polyhydrides