A two-scale analytical framework is derived showing nanomagnet chains under AC fields enter a collective heating regime with local temperature variations at the microkelvin level for realistic parameters.
Violation of Fourier's Law and Anomalous Heat Diffusion in Silicon
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abstract
We study heat conduction and diffusion in silicon nanowires (SiNWs) systematically by using non-equilibrium molecular dynamics. It is found that the thermal conductivity of SiNWs diverges with the length, even when the length is up to 1,100 nm which is much longer than the phonon mean free path. Moreover, an anomalous heat diffusion is observed which is believed to be responsible for the length dependent thermal conductivity. Our results provide strong evidence that Fourier's law of heat conduction is not valid in low dimensional nanostructures.
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Local-to-global heating crossover in chains of nanomagnets: A two-scale analytical framework
A two-scale analytical framework is derived showing nanomagnet chains under AC fields enter a collective heating regime with local temperature variations at the microkelvin level for realistic parameters.