Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session F16: Physics Enabled by Film Growth
8:00 AM–11:00 AM,
Tuesday, March 5, 2024
Room: M100G
Sponsoring
Unit:
DCMP
Chair: Jessica Martins
Abstract: F16.00001 : Superconducting Sr2RuO4 thin films with record transition temperature up to 2 K by molecular-beam epitaxy
8:00 AM–8:12 AM
Presenter:
Jinkwon Kim
(Cornell University)
Authors:
Jinkwon Kim
(Cornell University)
Casey K Kim
(Cornell University)
Jeongkeun Song
(Seoul Natl Univ)
Darrell G Schlom
(Cornell University)
In this work, we grew superconducting Sr2RuO4 thin films on NdGaO3 (110) substrates by molecular-beam epitaxy (MBE) in the adsorption-controlled regime.[2] We characterized the Sr2RuO4 thin films by x-ray diffraction (XRD), atomic force microscopy (AFM), scanning transmission electron microscopy (STEM), and low-temperature transport. Our optimized Sr2RuO4 thin films show a superconducting transition temperature (midpoint) as high as 2.1 K and residual resistivity ratio as 122; both are the best values ever reported. We also clarified that the quality of superconductivity in Sr2RuO4 thin film was highly related to the microstructure measured by STEM.
References
[1] Y. Maeno et al., Nature 372, 532 (1994)
[2] H. P. Nair et al., APL Materials 6, 101108 (2018)
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