Scaling at the Energy-driven Metal-Insulator Transition and the Thermoelectric Power

The electronic properties of disordered systems at the Anderson metal-insulator transition (MIT) have been the subject of intense study for several decades. Thermoelectric properties at the MIT, such as thermopower and thermal conductivity, however, have been relatively neglected. Using the recursive Green’s function method and the Chester-Thellung-Kubo-Greenwood formalism, we calculate numerically the low temperature behaviour of all kinetic coefficients Lij . From these we can deduce for example the electrical conductivity σ and the thermopower S at finite temperatures. Here we present results for the case of completely coherent transport in cubic 3D systems.