Regensburg 2022 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 25: Poster 1
HL 25.34: Poster
Mittwoch, 7. September 2022, 18:00–20:00, P2
Towards Heat Transport in Exfoliated β-Ga2O3 Flakes — •Sakhir Shibli1, Robin Ahrling1, Olivio Chiatti1, Rüdiger Mitdank1, Zbigniew Galazka2, and Saskia F. Fischer1 — 1Novel Materials Group, Humboldt-Universität zu Berlin, 10099 Berlin, Germany — 2Leibniz Institute for Crystal Growth, 12489 Berlin, Germany.
Heat transport is known as a diffusive process that is characterized as a slow process compared to other physical processes. Nevertheless, heat transport can also occur ballistically in the speed of sound within a material over distances comparable to the phonon’s mean free path, known as Casimir limit . Therefore, thin-layer materials are of interest for detecting ballistic heat transport . As a model system with large potential of application, e.g. in power electronics, we are investigating exfoliated thin-layer flakes of β-Ga2O3 single crystal . As a wide-band gap semiconductor with a high-breakthrough field, β-Ga2O3 has shown to be a promising material for applications in high power electronics . In this work, we fabricate and pattern micro-heater lines in order to employ the 3ω- and 2ω- methods .
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