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DS: Fachverband Dünne Schichten

DS 33: Poster: Thin Films: Applications, Transport and Phase Change Materials

DS 33.7: Poster

Mittwoch, 18. März 2020, 15:00–18:00, P1A

Investigation of Superconductivity in the Phase Change Material In₃Sb₁Te₂ — •Lisa Metzner¹, Elisabeth-Annemarie Gerhorst¹, Patrick Juraschitz¹, and Matthias Wuttig^1,2 — ¹I. Physikalisches Institut (IA), RWTH Aachen University, 52056 Aachen, Germany — ²JARA - FIT, RWTH Aachen University, Germany

Due to their unique physical properties, phase change materials (PCM) are promising candidates for future data storage applications. By applying electrical or laser pulses, they can be switched rapidly and reversibly between an amorphous and a crystalline state which show a big contrast in optical and electrical properties. It has been shown, that these chalcogenide-based materials can be classified by a unique bonding mechanism, called metavalent bonding, which can account for many of the special properties of these materials. When these materials are put on a map, besides their suitability for memory applications, many topological insulators, good thermoelectrics or superconductors can be identified, since strong electron-phonon interactions play a prominent role in these metavalent materials.
The aim of this work is to investigate the superconductivity in the phase change material In₃Sb₁Te₂. Therefore, thin film samples for both structural characterization and electrical transport measurements are deposited by sputter deposition. Furthermore, tunnel contacts are produced to analyse the superconducting energy gap alongside the critical temperatures and fields for films of various thicknesses.