Characteristics of charging effect in one-dimensional array of Bi 2Sr2CaCu2O8+δ intrinsic Josephson junctions

Takeshi Kawae, Takashi Yasuda, Satoshi Awaji, Kensuke Nakajima, Takeshi Hatano, Tsutomu Yamashita

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For the observation of the charging effect on a Josephson junction, the charging energy (Ec) must be much larger than the Josephson coupling energy (EJ) and thermal energy (kBT). We investigated the properties of submicron-sized Bi2Sr2CaCu2O 8+δ intrinsic Josephson junctions (IJJs) at low temperature. The current-voltage curve of IJJs with a junction area of 0.06 μm 2 showed a much higher resistance state near the zero bias voltage regions when the measurement temperature decreased to 72.6mK. The ratios of Ec/EJ and Eć/kBT were 7.04 and 5.78, respectively, which indicates that the charging effect is dominant. In addition, a characteristic voltage structure due to the charging effect in one-dimensional junction array, which is composed of the offset voltage and the threshold voltage of the junction, was observed.

Original languageEnglish
Pages (from-to)L766-L769
JournalJapanese Journal of Applied Physics, Part 2: Letters
Issue number24-27
Publication statusPublished - 2005 Jun 24


  • BiSrCaCuO LPE film
  • Charge soliton
  • Charging effect
  • Intrinsic Josephson junctions
  • One-dimensional junction array

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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