As shown in former papers, the nonadiabatic Heisenberg model presents a novel mechanism of Cooper pair formation which is not the result of an attractive electr
We discuss hole-induced magnetic solitons and metal-insulator transition of transport properties in diluted magnetic semiconductors Ga1-xMnxAs from the standpoi
The outstanding difference between high temperature superconductors and low temperature superconductors is the sign of the Hall coefficient, properly understood