Phase coherence and dynamics in weakly-coupled periodic and quasiperiodic superconductor arrays

Dale J Van Harlingen, K. N. Springer, G. C. Hilton, J. Tien

Research output: Contribution to journalArticle

Abstract

We have fabricated and studied the transport properties of arrays of proximity-coupled superconductor islands arranged in a quasiperiodic Penrose tile geometry. In the magnetic field response, we identify coarse structure arising from the irrational area ratio of the two fundamental tile shapes, and fine structure due to the long-range quasiperiodic order of the array. By varying the voltage bias of the sample, which governs the rate of vortex diffusion, we can adjust the range of phase coherence in the array and identify the origin of specific features in the magnetoresistance. These ideas have been corroborated by measurements on ladder arrays with varying widths and on periodic arrays with two irrationally-related cell areas. Measurements of the resistive transition and nonlinear current-voltage characteristics are consistent with a Kosterlitz-Thouless vortex-unbinding phase transition at zero field, but show more complicated behavior at finite fields.

Original languageEnglish (US)
Pages (from-to)134-145
Number of pages12
JournalPhysica B: Physics of Condensed Matter
Volume152
Issue number1-2
DOIs
StatePublished - Aug 2 1988

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phase coherence
Tile
Superconducting materials
Vortex flow
Ladders
Magnetoresistance
Current voltage characteristics
Bias voltage
Transport properties
tiles
Phase transitions
Magnetic fields
Geometry
vortices
electric potential
ladders
proximity
transport properties
fine structure
geometry

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Phase coherence and dynamics in weakly-coupled periodic and quasiperiodic superconductor arrays. / Van Harlingen, Dale J; Springer, K. N.; Hilton, G. C.; Tien, J.

In: Physica B: Physics of Condensed Matter, Vol. 152, No. 1-2, 02.08.1988, p. 134-145.

Research output: Contribution to journalArticle

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