Dresden 2014 – scientific programme
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MM: Fachverband Metall- und Materialphysik
MM 34: Poster Session
MM 34.32: Poster
Tuesday, April 1, 2014, 18:00–20:00, P4
Calculations of Thermal Conductivity across an Interface using Beam Matching — Debanjan Basu1, •Cynthia Volkert2, Christian Jooss2, and Peter Bloechl1 — 1Institute for Theoretical Physics, Clausthal University of Technology — 2Institute for Material Physics, University of Goettingen
Thermal conductivity is an important factor affecting the efficiency of thermoelectric devices. Our goal is to explore the thermal transmission due to phonons in multilayered structures on a mode-by-mode basis using the Beam Matching Technique. For this purpose, we determine the ``complex bandstructure'', which describes propagating as well as evanescent phonon modes of the individual materials of this multilayer.We describe how to extract the matching conditions from the classical equations of motion for the atoms.