Authors: Patrick L Garrity Whitney V Radosti
Publish Date: 2012/03/20
Volume: 41, Issue: 6, Pages: 1383-1388
Abstract
This manuscript focuses on the further development of a novel experimental technique that exploits the fundamental fluctuation spectrum of the electron ensemble in any electrically conductive material The electronic fluctuation spectrum when measured in the hydrodynamic regime carries a great deal of transport property information Subsequently Green–Kubo transport theory which is based upon the correlation function’s temporal decay equivalence to transport coefficients may be applied to the experimental data The crosscorrelation functions of electronic charge and thermal energy allow a direct measurement of the absolute thermoelectric Seebeck and Peltier coefficients The experiment is run on materials in complete energetic equilibrium ie where no thermal or electrical gradients are present The experimental data result in direct measurements of the electrical resistivity electronic thermal conductivity Lorenz number and Seebeck and Peltier coefficients Having validated the results on several metals this work reports further validation of the experimental technique on a baseline semiconductor 99999 pure bismuth telluride The methodology incorporates a double validation technique through comparative measurements against traditional experimental results and accepted results from the literature Excellent agreement is found thus lending further validity and understanding to this emerging experimental technique
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