Superconductivity in diamond, electron-phonon interaction and the zero-point renormalization of semiconducting gaps

The superconductivity observed in boron-doped diamond is discussed from the point of view of the phonon-driven BCS theory. It is shown that electron-phonon interaction is particularly strong in diamond. Other semiconductors possibly exhibiting superconductivity are brought to the fore. Related evidence for strong electron-phonon interaction in semiconductors containing carbon, nitrogen and oxygen is presented.