학술논문
Unconventional magnetic hysteresis of the Josephson supercurrent in magnetic Josephson Junctions
Document Type
Conference
Author
Source
2021 IEEE 14th Workshop on Low Temperature Electronics (WOLTE) Low Temperature Electronics (WOLTE), 2021 IEEE 14th Workshop on. :1-4 Apr, 2021
Subject
Language
Abstract
In Magnetic Josephson Junctions (MJJs) based on Superconductor-Insulator-Superconductor-Ferromagnet-Superconductor (SIS’FS), we provide evidence of an unconventional magnetic field behavior of the critical current characterized by an inverted magnetic hysteresis, i.e., an inverted shift of the whole magnetic field pattern when sweeping the external field. By thermoremanence measurements of S/F/S trilayers, we have ruled out that this uncommon behavior could be related to the F-stray fields. In principle, this finding could have a crucial role in the design and proper functioning of scalable cryogenic memories.