Abstract
Abstract The paper addresses the problem of very slow relaxations of electrons observed in a large variety of materials. Three aspects of the slow relaxations are explicitly considered: a.c. conductivity, dispersive transport, and the electron glass. Interactions have previously been proposed as the primary cause for the very slow relaxation process. It is argued here that while interactions are important in making slow rates even slower, the primary cause for the very slow relaxations is localization, and thus lack of translational symmetry. Specifically, it is shown that the appropriate a.c. conductivity, dispersive transport, as well as the electron glass can exist without interactions. The time evolution of the entropy and of the polarizability are calculated for non-interacting electrons in a disordered insulator. It is found that a temperature exists where the polarizability changes dramatically, but the entropy varies smoothly. The effects of interactions are discussed on a qualitative level.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.