Hot-electron thermocouple and the diffusion thermopower of two-dimensional electrons in GaAs.
نویسندگان
چکیده
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 approximately 2 K.
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ورودعنوان ژورنال:
- Physical review letters
دوره 103 4 شماره
صفحات -
تاریخ انتشار 2009