Mesoscopic diffusion thermopower in two-dimensional electron gases

Stephan Rojek; Jürgen K?nig

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Mesoscopic diffusion thermopower in two-dimensional electron gases

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The diffusion of energy that is locally deposited into two-dimensional electron gases by Joule heating generates transverse voltages across devices with broken symmetry. For mesoscopic structures characterized by device dimensions comparable to the energy diffusion length, the resulting thermopower strongly depends on details of the potential profile defined by electric gates. We discuss these mesoscopic features within a diffusion thermopower model and propose schemes to measure the energy diffusion length and its dependence on gate voltage.

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《Physical review, B. Condensed matter and materials physics》 |2014年第11期|115403-1-115403-11|共11页
作者
Stephan Rojek; Jürgen K?nig;
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作者单位

Theoretische Physik and CENIDE, Universit?t Duisburg-Essen, 47048 Duisburg, Germany;

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原文格式 PDF
正文语种英语
中图分类物理学;
关键词
Mesoscopic; diffusion; thermopower;

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Mesoscopic diffusion thermopower in two-dimensional electron gases

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