Field electron emission from a high-Tc superconductor Bi 2Sr2CaCu2O8+δ whisker

I. Takano*, T. Hatano, T. Ishikawa, B. L. Cho, E. Rokuta, C. Oshima

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution


In this study, field emission (FE) properties of a high-Tc superconductor Bi2Sr2CaCu2O 8+δ (Bi-2212) whisker as well as the optimization of the sample preparation methods were explored. Either chemical etching or mechanical cutting was undertaken at first in order to sharpen one end of the whisker. Both of the treatments successfully yielded a sharply pointed tip with its radius less than 500 nm. Subsequent preparation treatments in a UHV chamber provided layered patterns in FIM observation, which were very characteristic of those of other layered superconductors. More importantly, the treatments inside the UHV chamber stabilized FE currents to a significant level. The resulting fluctuation was subtle enough to be analyzed the energy distribution curves of the FE electron beams issuing from the superconducting Bi-2212.

Original languageEnglish
Title of host publicationIVESC2004 - 5th International Vacuum Electron Sources Conference Proceedings
Number of pages3
Publication statusPublished - 2004
EventIVESC2004 - 5th International Vacuum Electron Sources Conference Proceedings - Beijing
Duration: 2004 Sep 62004 Sep 10


OtherIVESC2004 - 5th International Vacuum Electron Sources Conference Proceedings

ASJC Scopus subject areas

  • Engineering(all)


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