Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session T64: Heavy Fermions III
11:30 AM–2:18 PM,
Thursday, March 17, 2022
Room: Hyatt Regency Hotel -Grant Park B
Sponsoring
Unit:
DCMP
Chair: Daniel Silevitch, Caltech
Abstract: T64.00003 : Critical currents across grain boundaries in polycrystalline CeCoIn5
11:54 AM–12:06 PM
Presenter:
Sanu Mishra
(Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA)
Authors:
Sanu Mishra
(Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA)
Sean Thomas
(Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA)
Rodney J Mccabe
(Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA)
Shizeng Lin
(Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA)
Eric D Bauer
(Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA)
Filip Ronning
(Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA)
In this talk, I will present results on GBs in polycrystalline samples of the HFS CeCoIn5. Electron backscatter diffraction images of well-polished samples reveal that majority of grains are not randomly oriented as one would expect but grow at an angle of 90o with respect to their neighboring grain. We performed critical current studies on various such GBs. Such investigations across GB are crucial to understand the superconducting order parameter symmetry of CeCoIn5 and its potential use in devices for quantum information science.
1. H. Hilgenkamp et al., Rev. Mod. Phys. 74, 485, 2002
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