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Phonon‐Dominated Energy Transport in Purely Metallic Heterostructures

URN to cite this document:
urn:nbn:de:bvb:355-epub-536875
DOI to cite this document:
10.5283/epub.53687
Herzog, Marc ; von Reppert, Alexander ; Pudell, Jan‐Etienne ; Henkel, Carsten ; Kronseder, Matthias ; Back, Christian H. ; Maznev, Alexei A. ; Bargheer, Matias
[img]License: Creative Commons Attribution 4.0
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Date of publication of this fulltext: 07 Feb 2023 05:39

This publication is part of the DEAL contract with Wiley.


Abstract

Ultrafast X-ray diffraction is used to quantify the transport of energy in laser-excited nanoscale gold-nickel (Au-Ni) bilayers. Electron transport and efficient electron-phonon coupling in Ni convert the laser-deposited energy in the conduction electrons within a few picoseconds into a strong non-equilibrium between hot Ni and cold Au phonons at the bilayer interface. Modeling of the subsequent ...

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