title: Current-induced forces and hot spots in biased nanojunctions.
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.
authors: School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, 430074 Wuhan, China.|Department of Micro- and Nanotechnology, Technical University of Denmark, 2800 Kongens Lyngby, Denmark.|Niels Bohr Institute, Nano-Science Center, University of Copenhagen, 2100 Copenhagen Ø, Denmark.
authors: Jing-Tao
authors: JT
authors: Lü
authors: Department of Micro- and Nanotechnology, Technical University of Denmark, 2800 Kongens Lyngby, Denmark.
authors: Rasmus B
authors: RB
authors: Christensen
authors: Department of Physics, National University of Singapore, 117551 Singapore, Republic of Singapore.
authors: Jian-Sheng
authors: JS
authors: Wang
authors: Niels Bohr Institute, Nano-Science Center, University of Copenhagen, 2100 Copenhagen Ø, Denmark.
authors: Per
authors: P
authors: Hedegård
authors: Center for Nanostructured Graphene (CNG), Department of Micro- and Nanotechnology, Technical University of Denmark, 2800 Kongens Lyngby, Denmark.
authors: Mads
authors: M
authors: Brandbyge