Berlin 2018 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 34: Superconductivity: Tunneling and Josephson Junctions
TT 34.2: Vortrag
Dienstag, 13. März 2018, 10:00–10:15, H 2053
Influence of Microwaves on Magnetic Switching in Nb-Al/AlOx-(Nb)-PdFe-Nb Josephson Junctions — •Roberta Caruso1,2, Davide Massarotti1,2, Aymen Ben Hamida3, Vitaly Bol’ginov4, Alessandro Miano1, Igor Vernik5, Valery Ryazanov4,6, Oleg Mukhanov5, Francesco Tafuri1,2, and Giovanni Piero Pepe1,2 — 1Dipartimento di Fisica, Università degli Studi di Napoli Federico II, I-80125 Napoli, Italy — 2CNR-SPIN Institute - Superconductors, Innovative Materials and Devices, UOS Napoli, I-80100 Napoli, Italy — 3National University of Science and Technology MISiS, Moscow, Russia — 4Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka 142432, Russia — 5Hypres, Inc., 175 Clearbrook Road, Elmsford, New York 10523, USA — 6Faculty of Physics, National Research University Higher School of Economics, Moscow, Russia
Superconducting circuits have found application in various fields, due to their high speed and high energy efficiency. However, the practical, large scale application of these circuits is limited by the lack of compatible energy-efficient, high-speed and high capacity random access memories. In 2012 Nb-Al/AlOx-(Nb)-PdFe-Nb have been proved to be random access magnetic memories compatible with RSFQ logic. However, the performances of such devices can be limited by the external addressing circuitry. Here we discuss the effect on magnetic switching of RF fields, in particular the enhancement of the separation between the 0 level and the 1 level when an external microwave field is applied, and its consequences on the performances of these devices.