Interplay between Static and Dynamic Properties of Semifluxons in ${\mathrm{YBa}}_{2}{\mathrm{Cu}}_{3}{\mathbf{O}}_{7\ensuremath{-}\ensuremath{\delta}}$ $0\mathrm{\text{\ensuremath{-}}}\ensuremath{\pi}$ Josephson Junctions

Interplay between Static and Dynamic Properties of Semifluxons in ${YBa}_{2} {Cu}_{3} O_{7 - δ}$ $0 − π$ Josephson Junctions

K. Cedergren, J. R. Kirtley, T. Bauch, G. Rotoli, A. Troeman, H. Hilgenkamp, F. Tafuri, and F. Lombardi

Phys. Rev. Lett. 104, 177003 – Published 28 April 2010

Abstract

We have investigated the static and dynamic properties of long ${YBa}_{2} {Cu}_{3} O_{7 - δ}$ $0 − π$ Josephson junctions and compared them with those of conventional 0 junctions. Scanning SQUID microscope imaging has revealed the presence of a semifluxon at the phase discontinuity point in $0 − π$ Josephson junctions. Zero field steps have been detected in the current-voltage characteristics of all junctions. Comparison with simulation allows us to attribute these steps to fluxons traveling in the junction for conventional 0 junctions and to fluxon-semifluxon interactions in the case of $0 − π$ Josephson junctions.

Received 18 November 2009

DOI:https://doi.org/10.1103/PhysRevLett.104.177003

Authors & Affiliations

K. Cedergren¹, J. R. Kirtley², T. Bauch¹, G. Rotoli³, A. Troeman⁴, H. Hilgenkamp⁴, F. Tafuri⁵, and F. Lombardi¹

¹Quantum Device Physics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
²Center for Probing the Nanoscale, Stanford University, Stanford, California 94304, USA
³CNISM and DIMEG, Università di L’Aquila, Località Monteluco, 67040 L’Aquila, Italy
⁴Faculty of Science and Technology and MESA+ Institute for Nanotechnology, University of Twente, Post Office Box 217, 7500 AE Enschede, The Netherlands
⁵Dipartimento Ingegneria dell’Informazione, Seconda Università di Napoli e CNR-SPIN, Aversa (CE), Italy

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 104, Iss. 17 — 30 April 2010

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Physical Review Letters

Interplay between Static and Dynamic Properties of Semifluxons in YBa2Cu3O7−δ 0−π Josephson Junctions

K. Cedergren, J. R. Kirtley, T. Bauch, G. Rotoli, A. Troeman, H. Hilgenkamp, F. Tafuri, and F. Lombardi

Phys. Rev. Lett. 104, 177003 – Published 28 April 2010

Abstract

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Authorization Required

Other Options

Download & Share

Images

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Log In

Search

Article Lookup

Paste a citation or DOI

Enter a citation

Interplay between Static and Dynamic Properties of Semifluxons in ${YBa}_{2} {Cu}_{3} O_{7 - δ}$ $0 − π$ Josephson Junctions