Expt 8) Metal-insulator transitions
Anshul Kogar
Prior to 1939, the Bloch-Wilson rule for predicting whether a given material would be an insulator or a metal reigned supreme. However, all was not well as early as 1937. De Boer and Verwey, in a famous paper, pointed out that 3d electron systems like NiO are orders of magnitude less conductive (about a factor of 1010 less!) than expected by the simple Wilson counting rule. In a short monograph, Peierls and Mott shared some of their ideas on the paper by de Boer and Verwey<