Výsledky vyhledávání - "Fisher, Timothy S"

The non-equilibrium Green's function (NEGF) method with B\"uttiker probe scattering self-energies is assessed by comparing its predictions for the thermal boundary resistance with molecular dynamics (MD) simulations. For simplicity, the interface of

Externí odkaz: http://arxiv.org/abs/1908.11578

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Photoconductivity calculations of bilayer graphene from first principles and deformation-potential approach

Autor: Ge, Yijun, Fisher, Timothy S.

Publikováno v: Phys. Rev. B 101, 235429 (2020)

We report first-principles calculations of electron-phonon coupling in bilayer graphene and the corresponding contribution to carrier scattering. At the phonon $\Gamma$ point, electrons with energies less than 200 meV are scattered predominantly by L

Externí odkaz: http://arxiv.org/abs/1907.11323

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Atomistic Simulation of Phonon and Magnon Thermal Transport across the Ferro-Paramagnetic Transition

Autor: Zhou, Yanguang, Tranchida, Julien, Ge, Yijun, Murthy, Jayathi Y., Fisher, Timothy S.

Publikováno v: Phys. Rev. B 101, 224303 (2020)

A temperature-dependent approach involving Green-Kubo equilibrium atomic and spin dynamics (GKEASD) is reported to assess phonon and magnon thermal transport processes accounting for phonon-magnon interactions. Using body-center cubic (BCC) iron as a

Externí odkaz: http://arxiv.org/abs/1901.00966

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Dramatic increase in the thermal boundary conductance and radiation limit from a Nonequilibrium Landauer Approach

Autor: Shi, Jingjing, Yang, Xiaolong, Fisher, Timothy S., Ruan, Xiulin

Thermal boundary conductance (TBC) is critical in many thermal and energy applications. A decades-old puzzle has been that many of the measured TBCs, such as those well characterized across Al/Si and ZnO/GaN interfaces, significantly exceed theoretic

Externí odkaz: http://arxiv.org/abs/1812.07910

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