Dresden 2017 – scientific programme
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MM: Fachverband Metall- und Materialphysik
MM 34: Poster session II
MM 34.24: Poster
Tuesday, March 21, 2017, 18:30–20:30, P4
AUXILIARY-MODE APPROACH TO TIME-DEPENDENT PHONON TRANSPORT — •Leonardo Medrano Sandonas1,2, Alexander Croy1, Rafael Gutierrez1, and Gianaurelio Cuniberti1,3,4 — 1Institute for Materials Science and Max Bergmann Center of Biomaterials, Dresden, Germany. — 2Max Planck Institute for the Physics of Complex Systems, Dresden, Germany. — 3Dresden Center for Computational Materials Science, Dresden, Germany. — 4Center for Advancing Electronics Dresden, Dresden, Germany.
Next to electrons, phonons play a major role for the behavior of nano-scale devices. Additionally, phononics and nano-mechanics offer the possibility to steer and manipulate phonons. Hence, a more detailed understanding of phonon dynamics is required. Using an auxiliary-mode approach, which has successfully been applied for the case of electrons, we present a method to describe time-dependent phonon transport based on the time-dependent Green’s function formalism. This allows us to study local vibrations which are driven by time-dependent temperature differences between heat reservoirs.