{ "id": "cond-mat/0006083", "version": "v1", "published": "2000-06-06T09:11:17.000Z", "updated": "2000-06-06T09:11:17.000Z", "title": "Behavior of the thermopower in amorphous materials at the metal-insulator transition", "authors": [ "C. Villagonzalo", "R. A. Römer", "M. Schreiber", "A. MacKinnon" ], "comment": "9 pages, 10 figures, submitted to PRB", "journal": "Phys. Rev. B, vol. 62 (2000), 16446-16452", "doi": "10.1103/PhysRevB.62.16446", "categories": [ "cond-mat.dis-nn" ], "abstract": "We study the thermal transport properties in three-dimensional disordered systems close to the metal-insulator transition within linear response. Using a suitable form for the energy-dependent conductivity $\\sigma$, we show that the value of the dynamical scaling exponent for noninteracting disordered systems such as the Anderson model of localization can be reproduced. Furthermore, the values of the thermopower S have the right order of magnitude close to the transition as compared to the experimental results. A sign change in the thermoelectric power S - as is often observed in experiments - can also be modeled within the linear response formulation using modified experimental $\\sigma$ data as input.", "revisions": [ { "version": "v1", "updated": "2000-06-06T09:11:17.000Z" } ], "analyses": { "keywords": [ "metal-insulator transition", "amorphous materials", "thermopower", "linear response formulation", "three-dimensional disordered systems close" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. B" }, "note": { "typesetting": "TeX", "pages": 9, "language": "en", "license": "arXiv", "status": "editable" } } }