Statistics of deep energy states in Coulomb glasses.
We study the statistics of local energy minima in the configuration space and the energy relaxation due to activated hopping in a system of interacting electrons in a random environment. The distribution of the local minima is exponential, which is in agreement with extreme value statistics considerations. The relaxation of the system energy shows logarithmic time dependence reflecting the ultrametric structure of the system.
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA.
A
A
Glatz
V M
VM
Vinokur
Y M
YM
Galperin