Title : A unified explanation for the mechanism of room-temperature superconductivity
Abstract:
The electron-phonon interaction in some materials can explain superconductivity fairly well, which has predicted a definitely low critical temperature Tc, at which the phase transition to form superconductor could happen. With the discovery of high-temperature superconductors, the sole electron-phonon mechanism seems inappropriate for the particular characteristics in some room-temperature superconductors. In my own work, a new scheme is proposed in order to explain the mechanism of room-temperature superconductivity. This mechanism can be named as excitonic interaction because of the existence of electronic excitons, which are excitations of bound electrons in the investigated system. In the framework of the well-known BCS theory, we can reveal the mechanism of room-temperature superconductivity by substituting excitons for phonons. It should be pointed out that the nature of order parameter in room-temperature superconductors is d pairing, whereas there exists the possiblity of s pairing by means of electron-phonon coupling. Based on this novel scheme, some room-temperature superconductor’s parameters, including the critical temperature, have been derived, which can serve as a comparison with experimental results.
