Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session K15: Superconducting Junctions and Lattices
3:00 PM–5:48 PM,
Tuesday, March 5, 2024
Room: M100F
Sponsoring
Unit:
DCMP
Chair: Daniel Silevitch, Caltech
Abstract: K15.00004 : Grain boundaries investigations in the unconventional superconductor CeCoIn5*
3:36 PM–3:48 PM
Presenter:
Sanu Mishra
(Los alamos National Lab)
Authors:
Sanu Mishra
(Los alamos National Lab)
Filip Ronning
(Los Alamos National Laboratory)
Sean M Thomas
(Los Alamos National Laboratory)
Rodney J Mccabe
(Los Alamos National Lab)
Eric D Bauer
(Los Alamos Natl Lab)
Shizeng Lin
(Los Alamos National Laboratory)
In this talk, I will present results on investigations of critical currents across grain boundaries in polycrystalline samples of the HFS CeCoIn5. Electron backscatter diffraction images of well-polished polycrystalline samples reveal that grain boundaries with misorientations between 0o and 90o are present, with a majority being the 90o misorientation GB. We performed critical current studies across various such misorientation GBs. Our investigations are crucial in understanding the superconducting order parameter symmetry of CeCoIn5.
References:
1. H. Hilgenkamp and J. Mannhart, Rev. Mod. Phys. 74, 485, 2002.
2. C. C. Tsuei and J. R. Kirtley, Rev. Mod. Phys. 72, 969, 2000.
*This work is supported by the U.S. Department of Energy, Office of Science and National Quantum Information Science Research Centers, Quantum Science Center.
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