NDLI: Magnetic Josephson Junctions With Superconducting Interlayer for Cryogenic Memory

Content Provider	IEEE Xplore Digital Library
Author	Vernik, I.V. Bol'ginov, V.V. Bakurskiy, S.V. Golubov, A.A. Kupriyanov, M.Y. Ryazanov, V.V. Mukhanov, O.A.
Copyright Year	2002
Abstract	We investigate a Magnetic Josephson Junction (MJJ) - a superconducting device with ferromagnetic barrier for a scalable high-density cryogenic memory compatible with energy-efficient single flux quantum (SFQ) circuits. The superconductor-insulator-superconductor-ferromagnet-superconductor (SIS^'FS) MJJs are analyzed both experimentally and theoretically. We found that the properties of SIS^'FS junctions fall into two distinct classes based on the thickness of S^' layer. We fabricate Nb-Al/AlOx-Nb-PdFe-Nb SIS^'FS MJJs using a co-processing approach with a combination of HYPRES and ISSP fabrication processes. The resultant SIS ^'FS structure with thin superconducting S^'-layer is substantially affected by the ferromagnetic layer as a whole. We fabricate these type of junctions to reach the device compatibility with conventional SIS junctions used for superconducting SFQ electronics to ensure a seamless integration of MJJ-based circuits and SIS JJ-based ultra-fast digital SFQ circuits. We report experimental results for MJJs, demonstrating their applicability for superconducting memory and digital circuits. These MJJs exhibit I_cR_n product only ~ 30% lower than that of conventional SIS junctions co-produced in the same fabrication. Analytical calculations for these SIS ^'FS structures are in a good agreement with the experiment. We discuss application of MJJ devices for memory and programmable logic circuits.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1701208
Ending Page	1701208
Page Count	1
File Size	478996
File Format	PDF
ISSN	10518223
Volume Number	23
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Junctions Random access memory Josephson junctions Superconducting epitaxial layers Integrated circuits Magnetic fields superconducting logic elements Energy efficient memory devices proximity effect RAM single flux quantum
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Multilayer Josephson junction flux quantum devices

Energy-Efficient Superconducting Computing—Power Budgets and Requirements

Passive Phase Shifter for Superconducting Josephson Circuits

Study of LR-Loading Technique for Low-Power Single Flux Quantum Circuits

Dynamics of some single flux quantum devices: I. Parametric quantron

Millimeter Wave Study of Hybrid Superconducting Heterostructures with Magnetic Active Interlayer

Design of a 16 kbit variable threshold Josephson RAM

Electrical Characteristics of Nb Based Superconductor-Ferromagnet-Insulator-Superconductor Josephson Junctions

AC-and DC-powered subnanosecond 1-kbit Josephson cache memory design

Magnetic Josephson Junctions With Superconducting Interlayer for Cryogenic Memory

Similar Documents

Multilayer Josephson junction flux quantum devices

Energy-Efficient Superconducting Computing—Power Budgets and Requirements

Passive Phase Shifter for Superconducting Josephson Circuits

Study of LR-Loading Technique for Low-Power Single Flux Quantum Circuits

Dynamics of some single flux quantum devices: I. Parametric quantron

Millimeter Wave Study of Hybrid Superconducting Heterostructures with Magnetic Active Interlayer

Design of a 16 kbit variable threshold Josephson RAM

Electrical Characteristics of Nb Based Superconductor-Ferromagnet-Insulator-Superconductor Josephson Junctions

AC-and DC-powered subnanosecond 1-kbit Josephson cache memory design

Magnetic Josephson Junctions With Superconducting Interlayer for Cryogenic Memory