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MM: Fachverband Metall- und Materialphysik
MM 18: Poster Session I
MM 18.40: Poster
Montag, 16. März 2020, 18:15–20:00, P4
Synthesising high-Tc hydrides for the electrical transport measurements — •Takaki Muramatsu1, Israel Osmond1, Owen Moulding1, Jonathan Buhot1, Oliver Load2, and Sven Friedemann1 — 1School of Physics, University of Bristol, UK — 2School of Earth Science, University of Bristol, UK
A series of high-Tc superconductors (LaHx, YHx, and ThHx) have been reported in hydrogen-rich hydrides under extreme high pressures since 200 K superconductivity was discovered in H3S in 2015 [1-6]. The hydrides are synthesised under high pressure above 100 GPa by using laser-heated diamond anvil cell (DAC) technique and the superconducting transitions are detected by electrical transport measurements in the DACs. However, these techniques are established only in a limited number of groups so far. Therefore, we pursued to acquire the experimental techniques to observe the high-Tc superconductivity of the hydrides. Recently we successfully synthesised the hydrides (H3S, LaHx and YHx) and observed the resistance drops in the temperature dependence of electrical resistance. The resistance drops were confirmed to be superconducting transitions as the temperatures of the drops shift to lower temperature with applied magnetic field. Our study now focuses on synthesising high quality samples and observing zero resistance of the superconductors.