Planar Josephson tunnel junctions in a transverse magnetic field

Monaco, R.; Aaroe, M.; Mygind, J.; Koshelets, V. P.
November 2007
Journal of Applied Physics;Nov2007, Vol. 102 Issue 9, p093911
Academic Journal
Traditionally, since the discovery of the Josephson effect in 1962, the magnetic diffraction pattern of planar Josephson tunnel junctions has been recorded with the field applied in the plane of the junction. Here we discuss the static junction properties in a transverse magnetic field where demagnetization effects imposed by the tunnel barrier and electrodes geometry are important. Measurements of the junction critical current versus magnetic field in planar Nb-based high-quality junctions with different geometry, size, and critical current density show that it is advantageous to use a transverse magnetic field rather than an in-plane field. The conditions under which this occurs are discussed.


Related Articles

  • On the magnetic field dependence of the critical current in small irregular polygonal Josephson junctions. Nappi, C.; Cristiano, R.; Frunzio, L.; Pagano, S.; Lisitskii, M. P. // Journal of Applied Physics;9/15/1996, Vol. 80 Issue 6, p3401 

    Discusses the magnetic field dependence of the critical current in small irregular polygonal Josephson junctions. Details of small junctions in magnetic field; Critical current pattern for an irregular quadrangle junction; Information on special configurations.

  • Radiation comb generation with extended Josephson junctions. Solinas, P.; Bosisio, R.; Giazotto, F. // Journal of Applied Physics;2015, Vol. 118 Issue 11, p113901-1 

    We propose the implementation of a Josephson radiation comb generator based on an extended Josephson junction subject to a time dependent magnetic field. The junction critical current shows known diffraction patterns and determines the position of the critical nodes when it vanishes. When the...

  • ‘‘Regular’’ supercurrent nonuniformities in Josephson junctions by ion implantation. Camerlingo, C.; Russo, M.; Tosello, C. // Journal of Applied Physics;9/1/1988, Vol. 64 Issue 5, p2759 

    Determines local inhomogeneities in the critical current density of niobium-based Josephson tunnel junctions by using nitrogen ion implantation in niobium thin films. Dependence of the maximum Josephson current on the external magnetic field; Effect of nitrogen ion implantation on sputtered...

  • Low-frequency excess noise in Nb-Al2O3-Nb Josephson tunnel junctions. Savo, Bonaventura; Wellstood, Frederick C.; Clarke, John // Applied Physics Letters;6/15/1987, Vol. 50 Issue 24, p1757 

    A fabrication technique for Nb-Al2O3-Nb Josephson tunnel junctions is described that is an alternative to the trilayer method generally used. At 4.2 K the magnitude of the low-frequency noise in the critical current I0 of four junctions with areas A ranging from 7.8 to 115 μm2 was...

  • Analysis of the critical current density in grain boundary Josephson junctions on a nanometer scale. Froehlich, O.M.; Schulze, H. // Applied Physics Letters;4/24/1995, Vol. 66 Issue 17, p2289 

    Investigates the spatial distribution of critical current density in bicrystal grain boundary Josephson junctions on a nanometer scale. Dependence of critical current on applied magnetic field; Evidence of spatial inhomogeneity of supercurrent density on all nanolength scales; Magnitude and...

  • The intrinsic determinants of the critical current in SIS' and SIS high-T[sub c] Josephson.... Gonnelli, R.S.; Puttero, D. // Applied Physics Letters;4/22/1996, Vol. 68 Issue 17, p2433 

    Investigates the influence of a depressed order parameter at the surface of a high-T[sub c] superconductor on the temperature dependence of the Josephson critical current in SIS and SIS junctions. Accuracy of using the depressed-gap models in reproducing the experimental curves; Cause for the...

  • Josephson characteristics in a-axis oriented.... Hashimoto, Tatsunori; Sagoi, Masayuki // Applied Physics Letters;4/6/1992, Vol. 60 Issue 14, p1756 

    Investigates the sandwich-type all-oxide Josephson junction consisting of an a-axis oriented structure. Josephson characteristics of the structure; Fraunhofer-like magnetic-field dependence of the critical current; Measurement of the normal coherence length.

  • Electric field controllable Josephson junctions of high quality in high-T[sub c] superconductors. Mayer, B.; Mannhart, J. // Applied Physics Letters;5/20/1996, Vol. 68 Issue 21, p3031 

    Evaluates the application of Josephson junctions in high-T[sub c] superconductors. Creation of a novel device structure; Change in the critical current of the junctions; Control of junctions by two independent inputs.

  • Analysis of the Fiske modes in a short Josephson junction with nonuniform critical current density. Gambardella, Umberto; Celentano, Giuseppe // Journal of Applied Physics;11/1/1998, Vol. 84 Issue 9, p5363 

    Examines the magnetic field dependence relating to the Fiske steps within a small Josephson junction which has a peaked critical current density distribution along the direction orthogonal to the field. How the maximum current of the resonant states is computed; Reference to the use of...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics