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arXiv · 0901.4159

Electronic Cooling in Graphene

R. Bistritzer·A. H. MacDonald
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Abstract

Energy transfer to acoustic phonons is the dominant low-temperature cooling channel of electrons in a crystal.For cold neutral graphene we find that the weak cooling power of its acoustical modes relative to the heat capacity of the system leads to a power law decay of the electronic temperature when far from equilibrium. For heavily doped graphene a high electronic temperature is shown to initially decrease linearly with time at a rate proportional to n^(3/2) with n being the electronic density. We discuss the relative importance of optical and acoustic phonons to cooling.

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R. Bistritzer, A. H. MacDonald. 2009-01-27. Electronic Cooling in Graphene. https://doi.org/10.1103/physrevlett.102.206410

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