Parity effect in a superconducting island in a tunable dissipative environment

Watson Kuo, C. S. Wu, J. H. Shyu, C. D. Chen

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We have experimentally studied Coulomb oscillation in a superconducting single-electron transistor, where electromagnetic-environment impedance was controlled using a one-dimensional array of superconducting quantum interference devices. By decreasing environment impedance, the Coulomb oscillation exhibited a crossover from 2e to 1e periodicity. In addition, the 1e component was enhanced when additional noise was introduced by connecting a potential meter to the central island of the transistor. We propose a theoretical analysis for this parity effect that includes the effect of fluctuations arising from the finite noise temperature of the electromagnetic environment.

Original languageEnglish
Article number184522
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number18
Publication statusPublished - 2006 Nov 22

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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