T3/7 Hopping Conductivity in a Class of Disordered Systems

摘要: We present a new mechanism which induces thermally activated hopping-conductivity law exp[−(T0/T)α], with α close to 1/2 without Coulomb interactions. In fact = 3/7 independently of the dimension. argue that this solves some old puzzles for systems not too far from percolation threshold such as granular materials and should apply various long intercluster tunnelling is negligible. The result relies on superlocalization property wave functions incipient clusters.