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arXiv · 2407.11028

Laser-initiated electron and heat transport in gold-skutterudite CoSb$_3$ bilayers resolved by pulsed x-ray scattering

Anton Plech·Peter Gaal·Daniel Schmidt·Matteo Levantino·Marcus Daniel·Svetoslav Stankov·Gernot Buth·Manfred Albrecht
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Abstract

Electron and lattice heat transport have been investigated in bilayer thin films of gold and CoSb$_3$ after photo-excitation of the nanometric top gold layer through picosecond x-ray scattering in a pump-probe setup. The unconventional observation of a larger portion of the deposited heat being detected first in the underlying CoSb$_3$ layer supports the picture of ballistic transport of the photo-excited electrons from gold to the underlying layer. The lattice expansion recorded by x-ray scattering allows accounting for the energy deposition and heat transport.

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Anton Plech, Peter Gaal, Daniel Schmidt, Matteo Levantino, Marcus Daniel, Svetoslav Stankov, Gernot Buth, Manfred Albrecht. 2024-07-03. Laser-initiated electron and heat transport in gold-skutterudite CoSb$_3$ bilayers resolved by pulsed x-ray scattering. https://arxiv.org/abs/2407.11028

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