Current-induced forces and hot spots in biased nanojunctions

Physical Review Letters
Jing-Tao LüMads Brandbyge

Abstract

We investigate theoretically the interplay of current-induced forces (CIFs), Joule heating, and heat transport inside a current-carrying nanoconductor. We find that the CIFs, 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, CIFs drive different phonon heat flux into the two electrodes. First-principles calculations on realistic biased nanojunctions illustrate the importance of the effect.

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Citations

Apr 3, 2016·The Journal of Chemical Physics·Michael Kilgour, Dvira Segal
May 20, 2018·Scientific Reports·Makusu TsutsuiMasateru Taniguchi
Mar 1, 2016·Beilstein Journal of Nanotechnology·Rasmus Bjerregaard ChristensenMads Brandbyge
Dec 30, 2016·Nanotechnology·D ArnoldR Hoffmann-Vogel
Jan 22, 2018·The Journal of Chemical Physics·Michael Thoss, Ferdinand Evers
Apr 27, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·H SevinçliL Medrano Sandonas
May 10, 2019·The Journal of Chemical Physics·Feng ChenMichael Galperin
Dec 15, 2015·Beilstein Journal of Nanotechnology·Brian CunninghamDaniel Dundas
Feb 3, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Sebastián E DeghiRaúl A Bustos-Marún
Jun 27, 2020·Nano Letters·Markus RingElke Scheer
Oct 26, 2018·The Journal of Physical Chemistry. a·Feng ChenMichael Galperin

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