TY - JOUR
T1 - Phase coherence and dynamics in weakly-coupled periodic and quasiperiodic superconductor arrays
AU - Van Harlingen, D. J.
AU - Springer, K. N.
AU - Hilton, G. C.
AU - Tien, J.
N1 - Funding Information:
We wish to thankJo rgeG avilano,R on Wakai, and FrancoN od for manyi nterestindgi scussions on arraysa nd quasiperiodilca ttices.T his work was supported by the Materials Research Laboratory otfh e Universityo f Illinois under grantN SF-DMR86-12860W. e also acknowledge the Universityo f Illinois ElectronB eamMicro-fabrication Facility and the Microfabrication Facility of the MaterialsR esearchL aboratory.
PY - 1988/8/2
Y1 - 1988/8/2
N2 - 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.
AB - 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.
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U2 - 10.1016/0921-4526(88)90079-8
DO - 10.1016/0921-4526(88)90079-8
M3 - Article
AN - SCOPUS:0024054172
SN - 0921-4526
VL - 152
SP - 134
EP - 145
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
IS - 1-2
ER -