Laser-initiated electron and heat transport in gold-skutterudite CoSb₃ bilayers resolved by pulsed x-ray scattering

2024/07/03 by Anton Plech, P. Gaal, Plech, Anton +12 · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Advanced Semiconductor Detectors and Materials #FOS: Physical sciences #Machine Learning in Materials Science #Materials Science (cond-mat.mtrl-sci) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Optics (physics.optics) #Semiconductor Quantum Structures and Devices

paper · pdf · doi:10.48550/arxiv.2407.11028

openalex publication_date 2024/07/03 · openalex created_date 2024/10/26 · openalex updated_date 2026/07/28

Abstract

Electron and lattice heat transport have been investigated in bilayer thin films of gold and CoSb₃ 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 CoSb₃ 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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