A Hot Electron Thermocouple and the Diffusion Thermopower of Two-Dimensional Electrons in GaAs

W. E. Chickering; J. P. Eisenstein; J. L. Reno

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arXiv · 0903.0835

A Hot Electron Thermocouple and the Diffusion Thermopower of Two-Dimensional Electrons in GaAs

W. E. Chickering·J. P. Eisenstein·J. L. Reno

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Abstract

A simple hot electron thermocouple is realized in a two-dimensional electron system (2DES) and used to measure the diffusion thermopower of the 2DES at zero magnetic field. This hot electron technique, which requires no micron-scale patterning of the 2DES, is much less sensitive than conventional methods to phonon-drag effects. Our thermopower results are in good agreement with the Mott formula for diffusion thermopower for temperatures up to T ~ 2 K.

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W. E. Chickering, J. P. Eisenstein, J. L. Reno. 2009-03-04. A Hot Electron Thermocouple and the Diffusion Thermopower of Two-Dimensional Electrons in GaAs. https://arxiv.org/abs/0903.0835

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