Nanometre-sized inhomogeneity in high-Jc Bi2Sr 2CaCu2O8+δ superconductors

M. Nishiyama, G. Kinoda, Y. Zhao, T. Hasegawa, Y. Itoh, N. Koshizuka, Masato Murakami

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We have performed atomic-scale high-resolution scanning tunnelling microscopy and spectroscopy measurements on the cleaved surface of single crystal Bi2Sr2CaCuO8+δ superconductors with high critical current density Jc. The samples exhibited rugged structure about 15 nm in period, larger than the modulation of the BiO layer, which corresponded well to the energy gap distribution at 77 K. The presence of inhomogeneity from a nanometre to a micrometre scale, in the energy gap distribution, the structural modulation and the chemical composition fluctuation, may play an important role in improving Jc values in the Bi2Sr2CaCu8+δ crystals.

Original languageEnglish
Pages (from-to)1406-1410
Number of pages5
JournalSuperconductor Science and Technology
Volume17
Issue number12
DOIs
Publication statusPublished - 2004 Dec

Fingerprint

Superconducting materials
inhomogeneity
Energy gap
Modulation
Critical current density (superconductivity)
modulation
Scanning tunneling microscopy
micrometers
scanning tunneling microscopy
critical current
chemical composition
Single crystals
Spectroscopy
current density
Crystals
high resolution
single crystals
Chemical analysis
spectroscopy
crystals

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Nanometre-sized inhomogeneity in high-Jc Bi2Sr 2CaCu2O8+δ superconductors. / Nishiyama, M.; Kinoda, G.; Zhao, Y.; Hasegawa, T.; Itoh, Y.; Koshizuka, N.; Murakami, Masato.

In: Superconductor Science and Technology, Vol. 17, No. 12, 12.2004, p. 1406-1410.

Research output: Contribution to journalArticle

Nishiyama, M, Kinoda, G, Zhao, Y, Hasegawa, T, Itoh, Y, Koshizuka, N & Murakami, M 2004, 'Nanometre-sized inhomogeneity in high-Jc Bi2Sr 2CaCu2O8+δ superconductors', Superconductor Science and Technology, vol. 17, no. 12, pp. 1406-1410. https://doi.org/10.1088/0953-2048/17/12/008
Nishiyama, M. ; Kinoda, G. ; Zhao, Y. ; Hasegawa, T. ; Itoh, Y. ; Koshizuka, N. ; Murakami, Masato. / Nanometre-sized inhomogeneity in high-Jc Bi2Sr 2CaCu2O8+δ superconductors. In: Superconductor Science and Technology. 2004 ; Vol. 17, No. 12. pp. 1406-1410.
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