Carrier density control of Bi-2212 whiskers

K. Inomata, T. Kawae, S. J. Kim, K. Nakajima, T. Yamashita, M. Nagao, H. Maeda

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The superconducting transition temperature (Tc), the junction resistance (RN) and the critical current density along the c-axis (Jc) of Bi-2212 whiskers with different oxygen content have been measured. Tc showed a systematical change for the c-axis length. Since the change of c-axis length corresponds to the change of oxygen content, it can be considered that this behavior explains the clear change in carrier density on the whisker from overdoped to underdoped region. Jc of intrinsic Josephson junctions fabricated on the whisker exponentially decreases with decreasing the carrier density on whiskers. It indicates that the transport along the c-axis is due to a tunneling process through an insulating barrier.

Original languageEnglish
Pages (from-to)335-338
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume372-376
Issue numberPART 1
DOIs
Publication statusPublished - 2002 Aug
Externally publishedYes

Keywords

  • Bi-2212 whiskers
  • C-axis length
  • Carrier density
  • Critical current density
  • Intrinsic Josephson junctions
  • Junction resistance
  • Oxygen content

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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