Positronium-like states in metals
Dekhtyar I.Ya. , Madatova E.G., Silant'ev V.I., Adonin V.T., Likhtorovich S.P. , Rustamov Sh.A.
We report the first observation of positronium-like states in metallic Mo crystals at liquid-helium and liquid-nitrogen temperatures. The results indicate that delocalized positronium (Ps) is produced in definite conditions also in metals, where it can move via quantum tunneling.