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arXiv · 1409.4047

Current-induced forces and hot-spots in biased nano-junctions

Jing-Tao Lü·Rasmus B. Christensen·Jian-Sheng Wang·Per Hedegård·Mads Brandbyge
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Abstract

We investigate theoretically the interplay of current-induced forces (CIF), Joule heating, and heat transport inside a current-carrying nano-conductor. We find that the CIF, due to the electron-phonon coherence, can control the spatial heat dissipation in the conductor. This yields a significant asymmetric concentration of excess heating (hot-spot) even for a symmetric conductor. When coupled to the electrode phonons, CIF drive different phonon heat flux into the two electrodes. First-principles calculations on realistic biased nano-junctions illustrate the importance of the effect.

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Jing-Tao Lü, Rasmus B. Christensen, Jian-Sheng Wang, Per Hedegård, Mads Brandbyge. 2015-02-10. Current-induced forces and hot-spots in biased nano-junctions. https://doi.org/10.1103/physrevlett.114.096801

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