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

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

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

Waseda University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In this study, field emission (FE) properties of a high-T_c 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 language	English
Title of host publication	IVESC2004 - 5th International Vacuum Electron Sources Conference Proceedings
Pages	284-286
Number of pages	3
Publication status	Published - 2004
Event	IVESC2004 - 5th International Vacuum Electron Sources Conference Proceedings - Beijing Duration: 2004 Sep 6 → 2004 Sep 10

Other

Other	IVESC2004 - 5th International Vacuum Electron Sources Conference Proceedings
City	Beijing
Period	04/9/6 → 04/9/10

ASJC Scopus subject areas

Engineering(all)

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Takano, I., Hatano, T., Ishikawa, T., Cho, B. L., Rokuta, E., & Oshima, C. (2004). Field electron emission from a high-T_c superconductor Bi ₂Sr₂CaCu₂O₈+δ whisker. In IVESC2004 - 5th International Vacuum Electron Sources Conference Proceedings (pp. 284-286)

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title = "Field electron emission from a high-Tc superconductor Bi 2Sr2CaCu2O8+δ whisker",

abstract = "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.",

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pages = "284--286",

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AU - Takano, I.

AU - Hatano, T.

AU - Ishikawa, T.

AU - Cho, B. L.

AU - Rokuta, E.

AU - Oshima, C.

PY - 2004

Y1 - 2004

N2 - 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.

AB - 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.

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