Wire network behavior in superconducting Nb films with diluted triangular arrays of holes

S. K. He, W. J. Zhang, H. F. Liu, G. M. Xue, B. H. Li, H. Xiao, Z. C. Wen, X. F. Han, S. P. Zhao, C. Z. Gu, X. G. Qiu

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10 Citations (Scopus)

Abstract

We present results of transport measurements on superconducting Nb films with diluted triangular arrays (honeycomb and kagomé) of holes. The patterned films have large disk-shaped interstitial regions even when the edge-to-edge separations between nearest neighboring holes are comparable to the coherence length. Changes in the field interval of two consecutive minima in the field dependent resistance R(H) curves are observed. In the low field region, fine structures in the R(H) and T c(H) curves are identified in both arrays. Comparison of experimental data with calculation results reveals that these structures observed in honeycomb and kagomé hole arrays resemble those in wire networks with triangular and T 3 symmetries, respectively. The findings suggest that even in these specified periodic hole arrays with very large interstitial regions, the low field fine structures are determined by the connectivity of the nanostructures.

Original languageEnglish
Article number155702
JournalJournal of Physics Condensed Matter
Volume24
Issue number15
DOIs
Publication statusPublished - 2012 Apr 18

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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    He, S. K., Zhang, W. J., Liu, H. F., Xue, G. M., Li, B. H., Xiao, H., Wen, Z. C., Han, X. F., Zhao, S. P., Gu, C. Z., & Qiu, X. G. (2012). Wire network behavior in superconducting Nb films with diluted triangular arrays of holes. Journal of Physics Condensed Matter, 24(15), [155702]. https://doi.org/10.1088/0953-8984/24/15/155702