1303.3214 (Jie Ren et al.)
Jie Ren, Jian-Xin Zhu
We study the nonequilibrium nanoscale energy transfer in a quantum junction in contact with fermionic and bosonic reservoirs, where the energy exchange is directly assisted by the electron-phonon interaction. The system describes the inelastic electron-phonon scattering near a nanoscale metal-dielectric interface and renders analytic investigation of the microscopic mechanism. We demonstrate the heat diode effect and negative differential thermal conductance in such nanoscale interfaces and discuss why these intriguing thermal properties are absent in bulk metal-dielectric interfaces. The results described here are relevant for understanding the interface heat transfer via electron-phonon coupling and could have potential applications in controlling energy in low-dimensional nanodevices.
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http://arxiv.org/abs/1303.3214
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