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arXiv · 1206.3818

Transient heat generation in a quantum dot under a step-like pulse bias

Wei Pei·X. C. Xie·Qing-feng Sun
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Abstract

We study the transient heat generation in a quantum dot system driven by a step-like or a square-shaped pulse bias. We find that a periodically oscillating heat generation arises after adding the sudden bias. One particularly surprising result is that there exists a heat absorption from the zero-temperature phonon subsystem. Thus the phonon population in non-equilibrium can be less than that of the equilibrium electron-phonon system. In addition, we also ascertain the optimal conditions for the operation of a quantum dot with the minimum heat generation.

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Wei Pei, X. C. Xie, Qing-feng Sun. 2012-06-18. Transient heat generation in a quantum dot under a step-like pulse bias. https://doi.org/10.1088/0953-8984%2F24%2F41%2F415302

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