Regensburg 2025 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 11: Superconductivity: Poster
TT 11.7: Poster
Montag, 17. März 2025, 15:00–18:00, P4
Superconductivity of Reduced Indium Tin Oxide — •Luca Hofmeister, Jan Pusskeiler, Gabriele Untereiner, Martin Dressel, and Marc Scheffler — 1. Physikalisches Institut, Universität Stuttgart, Deutschland
Indium tin oxide (ITO) is a transparent semiconductor commonly used in photovoltaics and flat screen displays. It is possible to induce low temperature superconductivity in ITO via electrochemical reduction in a NaCl solution. [1,2]
We reduced multiple ITO samples at a constant reduction current and measured the temperature dependence of their two-point resistance with a microwave Corbino spectrometer. Depending on the reduction time, the Tc ranges from 2.2 K to 3.7 K, forming a superconducting dome.
Reduction induces a color change of the ITO, which loses some of its transparency for increasing reduction times. Nevertheless, ITO retains some transparency even after very long reduction, thereby making ITO a candidate for usage as a transparent superconducter.
[1] A. E. Aliev et al., Appl. Phys. Lett. 101, 252603 (2012);
[2] E. Batson et al., Supercond. Sci. Technol. 36, 055009 (2023).
Keywords: Indium Tin Oxide; Transparent Superconductor; Superconducting Dome