Static properties of small Josephson tunnel junctions in an oblique magnetic field

R. Monaco, M. Aaroe, J. Mygind, and V. P. Koshelets
Phys. Rev. B 79, 144521 – Published 22 April 2009

Abstract

We have carried out a detailed experimental investigation of the static properties of planar Josephson tunnel junctions in presence of a uniform external magnetic field applied in an arbitrary orientation with respect to the barrier plane. We considered annular junctions, as well as rectangular junctions (having both overlap and cross-type geometries) with different barrier aspect ratios. It is shown how most of the experimental findings in an oblique field can be reproduced invoking the superposition principle to combine the classical behavior of electrically small junctions in an in-plane field together with the small junction behavior in a transverse field that we recently published [R. Monaco et al., J. Appl. Phys. 104, 023906 (2008)]. We show that the presence of a transverse field may have important consequences, which could be either voluntarily exploited in applications or present an unwanted perturbation.

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  • Received 15 January 2009

DOI:https://doi.org/10.1103/PhysRevB.79.144521

©2009 American Physical Society

Authors & Affiliations

R. Monaco*

  • Istituto di Cibernetica del CNR, 80078, Pozzuoli, Italy and Dipartimento di Fisica, Unità INFM, Università di Salerno, 84081 Baronissi, Italy

M. Aaroe and J. Mygind

  • DTU Physics, B309, Technical University of Denmark, DK-2800 Lyngby, Denmark

V. P. Koshelets

  • Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Science, Mokhovaya 11, B7, 125009, Moscow, Russia

  • *roberto@sa.infn.it

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Vol. 79, Iss. 14 — 1 April 2009

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