Speaker
Description
The search for triplet superconductors in which the supercurrents carry finite spin angular momentum has been of great interest for a number of years. Although the vast majority of superconducting materials are conventional with condensates formed from Cooper pairs that have zero spin angular momentum, it has been recognized for some time that interfaces between conventional superconductors and ferromagnets can give rise to proximity induced superconductivity in the magnetic layer that has a triplet component. We discuss studies in which we have explored proximity induced superconductivity in magnetic multilayers, chiral antiferromagnets and platinum layers which themselves are made magnetic by proximity to an insulating ferrimagnet. We also discuss intrinsic superconducting diode effects in lateral and vertical Josephson junctions formed between conventional superconducting electrodes and various spacer layers. Our primary goal is to develop cryogenic spintronic memory devices formed from magnetic racetracks in which triplet supercurrents can manipulate nanoscopic magnetic textures which are detected via the Josephson diode effect.