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arXiv · 1112.5360

On the temperature dependence of ballistic Coulomb drag in nanowires

M. I. Muradov·V. L. Gurevich
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Abstract

We have investigated within the theory of Fermi liquid dependence of Coulomb drag current in a passive quantum wire on the applied voltage $V$ across an active wire and on the temperature $T$ for any values of $eV/k_BT$. We assume that the bottoms of the 1D minibands in both wires almost coincide with the Fermi level. We come to conclusions that 1) within a certain temperature interval the drag current can be a descending function of the temperature $T$; 2) the experimentally observed temperature dependence $T^{-0.77}$ of the drag current can be interpreted within the framework of Fermi liquid theory; 3) at relatively high applied voltages the drag current as a function of the applied voltage saturates; 4) the screening of the electron potential by metallic gate electrodes can be of importance.

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M. I. Muradov, V. L. Gurevich. 2011-12-22. On the temperature dependence of ballistic Coulomb drag in nanowires. https://doi.org/10.1088/0953-8984%2F24%2F13%2F135304

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