A sidewall shunting method is demonstrated to realize overdamped (i.e., nonhysteretic) current-voltage characteristics in superconductor-insulator-superconductor (SIS) junctions. Unlike the conventional layout of shunted SIS junctions, patterning a normal metal shunt on one of the sides of the junction considerably reduces the parasitic inductive path and leaves more area on a chip for active components. Using a conventional optical lithography route we have fabricated sidewall shunted SIS junctions of various sizes from NbN–MgO–NbN trilayers on MgO and oxidized Si substrates. In our experiment the effective shunting resistance is realized by a tunnel contact between the shunt metal and the base electrode via a thin layer of insulating MgO. The results of our electrical measurements verify the overdamped nature of the junctions shunted in this manner.
Skip Nav Destination
Article navigation
27 April 2009
Research Article|
May 01 2009
Sidewall shunted overdamped NbN–MgO–NbN Josephson junctions Available to Purchase
K. Senapati;
K. Senapati
a)
Department of Materials Science and Metallurgy,
University of Cambridge
, Cambridge CB2 3QZ, United Kingdom
Search for other works by this author on:
Z. H. Barber
Z. H. Barber
Department of Materials Science and Metallurgy,
University of Cambridge
, Cambridge CB2 3QZ, United Kingdom
Search for other works by this author on:
K. Senapati
a)
Department of Materials Science and Metallurgy,
University of Cambridge
, Cambridge CB2 3QZ, United Kingdom
Z. H. Barber
Department of Materials Science and Metallurgy,
University of Cambridge
, Cambridge CB2 3QZ, United Kingdom
a)
Electronic mail: [email protected].
Appl. Phys. Lett. 94, 173511 (2009)
Article history
Received:
March 22 2009
Accepted:
April 15 2009
Citation
K. Senapati, Z. H. Barber; Sidewall shunted overdamped NbN–MgO–NbN Josephson junctions. Appl. Phys. Lett. 27 April 2009; 94 (17): 173511. https://doi.org/10.1063/1.3130087
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
Roadmap on photonic metasurfaces
Sebastian A. Schulz, Rupert. F. Oulton, et al.
Attosecond physics and technology
O. Alexander, D. Ayuso, et al.
THz cyclotron resonance of a 2D hole gas in a GaN/AlN heterostructure
J. Wang, D. G. Rickel, et al.
Related Content
Intrinsically shunted Josephson junctions for electronics applications
Low Temp. Phys. (July 2017)
Universal resistance capacitance crossover in current-voltage characteristics for unshunted array of overdamped Nb – AlO x – Nb Josephson junctions
J. Appl. Phys. (May 2010)
Overdamped Nb ∕ Al – Al O x ∕ Nb Josephson junctions
Appl. Phys. Lett. (January 2005)
Josephson junctions with nonlinear damping for rapid single-flux-quantum - qubit circuits
Appl. Phys. Lett. (January 2005)