Towards room-temperature superconductivity

By taking advantage of a stability criterion established recently, the critical temperature \(T_c\) is reckoned with help of the microscopic parameters, characterising the normal and superconducting electrons, namely the independent-electron band structure and a \textit{repulsive} two-electron force. The emphasis is laid on the sharp \(T_c\) dependence upon electron concentration and inter-electron coupling, which might offer a practical route toward higher \(T_c\) values and help to understand why high-\(T_c\) compounds exhibit such remarkable properties.