Coulomb drag between two graphene layers at different temperatures
arXiv:2209.05529 · doi:10.1103/PhysRevB.106.245414
Abstract
We theoretically study the Coulomb drag in graphene when there is a temperature difference between the layers. Within the degenerate limit for equal layer densities, we find that this can lead to significant deviations from the usual quadratic temperature dependence of the drag resistivity. The exact behavior depends strongly on the phase space available for intraband scattering, and is not symmetrical when the temperatures of the layers are interchanged. In particular, when one layer is at a much higher temperature than the other, the drag resistivity behaves as , where is the interlayer separation. The magnitude of the drag in this limit is always larger when the active layer is at the higher temperature.
arXiv comment8 pages, 2 figures. Accepted version
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