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Title: Critical current oscillations of elliptical Josephson junctions with single-domain ferromagnetic layers

Abstract

We report that josephson junctions containing ferromagnetic layers are of considerable interest for the development of practical cryogenic memory and superconducting qubits. Such junctions exhibit a ground-state phase shift of π for certain ranges of ferromagnetic layer thicknesses. We present studies of Nb based micron-scale elliptically shaped Josephson junctions containing ferromagnetic barriers of Ni 81Fe 19 or Ni 65Fe 15Co 20. By applying an external magnetic field, the critical current of the junctions is found to follow characteristic Fraunhofer patterns and display sharp switching behavior suggestive of single-domain magnets. The high quality of the Fraunhofer patterns enables us to extract the maximum value of the critical current even when the peak is shifted significantly outside the range of the data due to the magnetic moment of the ferromagnetic layer. The maximum value of the critical current oscillates as a function of the ferromagnetic barrier thickness, indicating transitions in the phase difference across the junction between values of zero and π. Lastly, we compare the data to previous work and to models of the 0-π transitions based on existing theories.

Authors:
ORCiD logo [1];  [1];  [1];  [1]; ORCiD logo [1]; ORCiD logo [1];  [2]; ORCiD logo [3];  [3]
  1. Michigan State Univ., East Lansing, MI (United States). Department of Physics and Astronomy
  2. Northrop Grumman Systems Corporation, Baltimore, MD (United States)
  3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Laboratories, null
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); IARPA
OSTI Identifier:
1411619
Alternate Identifier(s):
OSTI ID: 1398292
Report Number(s):
SAND-2017-12975J
Journal ID: ISSN 0021-8979; 659178; TRN: US1800255
Grant/Contract Number:  
AC04-94AL85000; NA0003525
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 122; Journal Issue: 13; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Superconductivity; Josephson Junction; Ferromagnetism; Cryogenic Memory; Proximity Effect

Citation Formats

Glick, Joseph A., Khasawneh, Mazin A., Niedzielski, Bethany M., Loloee, Reza, Pratt, W. P., Birge, Norman O., Gingrich, E. C., Kotula, P. G., and Missert, N. Critical current oscillations of elliptical Josephson junctions with single-domain ferromagnetic layers. United States: N. p., 2017. Web. doi:10.1063/1.4989392.
Glick, Joseph A., Khasawneh, Mazin A., Niedzielski, Bethany M., Loloee, Reza, Pratt, W. P., Birge, Norman O., Gingrich, E. C., Kotula, P. G., & Missert, N. Critical current oscillations of elliptical Josephson junctions with single-domain ferromagnetic layers. United States. doi:10.1063/1.4989392.
Glick, Joseph A., Khasawneh, Mazin A., Niedzielski, Bethany M., Loloee, Reza, Pratt, W. P., Birge, Norman O., Gingrich, E. C., Kotula, P. G., and Missert, N. Fri . "Critical current oscillations of elliptical Josephson junctions with single-domain ferromagnetic layers". United States. doi:10.1063/1.4989392. https://www.osti.gov/servlets/purl/1411619.
@article{osti_1411619,
title = {Critical current oscillations of elliptical Josephson junctions with single-domain ferromagnetic layers},
author = {Glick, Joseph A. and Khasawneh, Mazin A. and Niedzielski, Bethany M. and Loloee, Reza and Pratt, W. P. and Birge, Norman O. and Gingrich, E. C. and Kotula, P. G. and Missert, N.},
abstractNote = {We report that josephson junctions containing ferromagnetic layers are of considerable interest for the development of practical cryogenic memory and superconducting qubits. Such junctions exhibit a ground-state phase shift of π for certain ranges of ferromagnetic layer thicknesses. We present studies of Nb based micron-scale elliptically shaped Josephson junctions containing ferromagnetic barriers of Ni81Fe19 or Ni65Fe15Co20. By applying an external magnetic field, the critical current of the junctions is found to follow characteristic Fraunhofer patterns and display sharp switching behavior suggestive of single-domain magnets. The high quality of the Fraunhofer patterns enables us to extract the maximum value of the critical current even when the peak is shifted significantly outside the range of the data due to the magnetic moment of the ferromagnetic layer. The maximum value of the critical current oscillates as a function of the ferromagnetic barrier thickness, indicating transitions in the phase difference across the junction between values of zero and π. Lastly, we compare the data to previous work and to models of the 0-π transitions based on existing theories.},
doi = {10.1063/1.4989392},
journal = {Journal of Applied Physics},
number = 13,
volume = 122,
place = {United States},
year = {2017},
month = {10}
}

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Works referenced in this record:

Current perpendicular magnetoresistances of NiFeCo and NiFe “Permalloys”
journal, June 2000

  • Vila, L.; Park, W.; Caballero, J. A.
  • Journal of Applied Physics, Vol. 87, Issue 12
  • DOI: 10.1063/1.373586

Thermodynamics and phase diagrams of layered superconductor/ferromagnet nanostructures
journal, March 2007


Complementary Josephson junction devices and circuits: a possible new approach to superconducting electronics
journal, June 1998

  • Terzioglu, E.; Beasley, M. R.
  • IEEE Transactions on Appiled Superconductivity, Vol. 8, Issue 2
  • DOI: 10.1109/77.678441

Design aspects of superconducting-phase quantum bits
journal, April 2001


Controllable Josephson current through a pseudospin-valve structure
journal, February 2004

  • Bell, C.; Burnell, G.; Leung, C. W.
  • Applied Physics Letters, Vol. 84, Issue 7
  • DOI: 10.1063/1.1646217

Hybrid superconducting-magnetic memory device using competing order parameters
journal, May 2014

  • Baek, Burm; Rippard, William H.; Benz, Samuel P.
  • Nature Communications, Vol. 5, Issue 1
  • DOI: 10.1038/ncomms4888

Tomographic Spectral Imaging with Multivariate Statistical Analysis: Comprehensive 3D Microanalysis
journal, January 2006

  • Kotula, Paul G.; Keenan, Michael R.; Michael, Joseph R.
  • Microscopy and Microanalysis, Vol. 12, Issue 01
  • DOI: 10.1017/S1431927606060193

0.1 ppm four‐terminal resistance bridge for use with a dilution refrigerator
journal, November 1980

  • Edmunds, D. L.; Pratt, W. P.; Rowlands, J. A.
  • Review of Scientific Instruments, Vol. 51, Issue 11
  • DOI: 10.1063/1.1136116

Properties of superconductor/ferromagnet structures with spin-dependent scattering
journal, February 2006


Ferromagnetic Josephson switching device with high characteristic voltage
journal, May 2012

  • Larkin, Timofei I.; Bol’ginov, Vitaly V.; Stolyarov, Vasily S.
  • Applied Physics Letters, Vol. 100, Issue 22
  • DOI: 10.1063/1.4723576

Temperature-induced crossover between 0 and π states in S/F/S junctions
journal, August 2003


S/F/S Josephson junctions with single-domain ferromagnets for memory applications
journal, July 2015

  • Niedzielski, Bethany M.; Gingrich, E. C.; Loloee, Reza
  • Superconductor Science and Technology, Vol. 28, Issue 8
  • DOI: 10.1088/0953-2048/28/8/085012

A single flux quantum circuit with a ferromagnet-based Josephson π-junction
journal, March 2010


CPP magnetoresistance of magnetic multilayers: A critical review
journal, June 2016


Observation of 0– π transition in SIsFS Josephson junctions
journal, January 2015

  • Ruppelt, N.; Sickinger, H.; Menditto, R.
  • Applied Physics Letters, Vol. 106, Issue 2
  • DOI: 10.1063/1.4905672

Voltage Due to Thermal Noise in the dc Josephson Effect
journal, June 1969


Memory cell based on a φ Josephson junction
journal, June 2013

  • Goldobin, E.; Sickinger, H.; Weides, M.
  • Applied Physics Letters, Vol. 102, Issue 24
  • DOI: 10.1063/1.4811752

Superconducting tunnel junction base electrode planarization
journal, July 1998

  • Thomas, C. D.; Ulmer, M. P.; Ketterson, J. B.
  • Journal of Applied Physics, Vol. 84, Issue 1
  • DOI: 10.1063/1.368037

The effect of normal and insulating layers on 0- π transitions in Josephson junctions with a ferromagnetic barrier
journal, November 2015


Magnetic Josephson Junctions With Superconducting Interlayer for Cryogenic Memory
journal, June 2013

  • Vernik, I. V.; Bol'ginov, V. V.; Bakurskiy, S. V.
  • IEEE Transactions on Applied Superconductivity, Vol. 23, Issue 3
  • DOI: 10.1109/TASC.2012.2233270

Critical Current Oscillations in Strong Ferromagnetic π Junctions
journal, October 2006


Zero to π transition in superconductor-ferromagnet-superconductor junctions
journal, September 2007


Josephson current in superconductor-ferromagnet structures with a nonhomogeneous magnetization
journal, September 2001


High quality ferromagnetic 0 and π Josephson tunnel junctions
journal, September 2006

  • Weides, M.; Kemmler, M.; Goldobin, E.
  • Applied Physics Letters, Vol. 89, Issue 12
  • DOI: 10.1063/1.2356104

Theoretical model of superconducting spintronic SIsFS devices
journal, May 2013

  • Bakurskiy, S. V.; Klenov, N. V.; Soloviev, I. I.
  • Applied Physics Letters, Vol. 102, Issue 19
  • DOI: 10.1063/1.4805032

Area-dependence of spin-triplet supercurrent in ferromagnetic Josephson junctions
journal, June 2012


Proximity effects in superconductor-ferromagnet heterostructures
journal, September 2005


Superconducting π Qubit with a Ferromagnetic Josephson Junction
journal, August 2005


Superconductor-insulator-ferromagnet-superconductor Josephson junction: From the dirty to the clean limit
journal, October 2011


Josephson Junction through a Thin Ferromagnetic Layer: Negative Coupling
journal, September 2002


Oscillations of the Superconducting Critical Current in Nb-Cu-Ni-Cu-Nb Junctions
journal, October 2002


Implementation of superconductor/ferromagnet/ superconductor π-shifters in superconducting digital and quantum circuits
journal, June 2010

  • Feofanov, A. K.; Oboznov, V. A.; Bol’ginov, V. V.
  • Nature Physics, Vol. 6, Issue 8
  • DOI: 10.1038/nphys1700

Josephson effect in SIFS tunnel junctions with domain walls in the weak link region: In memory of V.F. Gantmakher
journal, June 2015


Rapid single-flux quantum logic using π-shifters
journal, January 2003

  • Ustinov, A. V.; Kaplunenko, V. K.
  • Journal of Applied Physics, Vol. 94, Issue 8
  • DOI: 10.1063/1.1604964

The role of surface roughness in the fabrication of stacked Nb/Al–AlO x /Nb tunnel junctions
journal, November 1996

  • Kohlstedt, H.; König, F.; Henne, P.
  • Journal of Applied Physics, Vol. 80, Issue 9
  • DOI: 10.1063/1.363459

Observation of periodic π -phase shifts in ferromagnet-superconductor multilayers
journal, May 2006


Environmentally decoupled sds -wave Josephson junctions for quantum computing
journal, April 1999

  • Ioffe, Lev B.; Geshkenbein, Vadim B.; Feigel'man, Mikhail V.
  • Nature, Vol. 398, Issue 6729
  • DOI: 10.1038/19464

Current-phase relations in SIsFS junctions in the vicinity of 0- π transition
journal, March 2017


Critical current behavior in Josephson junctions with the weak ferromagnet PdNi
journal, March 2009


Switching at small magnetic fields in Josephson junctions fabricated with ferromagnetic barrier layers
journal, January 2014

  • Abd El Qader, Makram; Singh, R. K.; Galvin, Sarah N.
  • Applied Physics Letters, Vol. 104, Issue 2
  • DOI: 10.1063/1.4862195

Josephson tunnel junctions with a strong ferromagnetic interlayer
journal, February 2009


Controllable 0–π Josephson junctions containing a ferromagnetic spin valve
journal, March 2016

  • Gingrich, E. C.; Niedzielski, Bethany M.; Glick, Joseph A.
  • Nature Physics, Vol. 12, Issue 6
  • DOI: 10.1038/nphys3681

Coupling of Two Superconductors through a Ferromagnet: Evidence for a π Junction
journal, March 2001


Josephson effect in double-barrier superconductor-ferromagnet junctions
journal, July 2003