Interlayer tunneling spectroscopy for slightly overdoped Bi2Sr2CaCu2O8+δ

Minoru Suzuki, Takao Watanabe, Azusa Matsuda

Research output: Contribution to journalArticle

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Abstract

We have measured the interlayer tunneling characteristics of slightly overdoped Bi2Si2CaCu2O8+δ in the c-axis direction from 10 to 220 K by using very thin mesas containing approximately ten CuO2 double layers. The superconducting gap 2Δ is 50 meV at 10 K and shows a temperature (T) dependence similar to that of the BCS theory. A pseudogap evolves below 150 K, where the c-axis resistivity ρc is semiconducting. The normal-state tunneling resistance RN shows a linear T dependence down to Tc, exhibits an abrupt decrease at Tc, and saturates at low T. This reflects scattering arising from an electronic interaction that is relevant to the high-Tc superconductivity.

Original languageEnglish
Pages (from-to)5361-5364
Number of pages4
JournalPhysical Review Letters
Volume82
Issue number26 I
Publication statusPublished - 1999 Jun 28
Externally publishedYes

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interlayers
BCS theory
mesas
spectroscopy
superconductivity
electrical resistivity
scattering
electronics
interactions
temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Interlayer tunneling spectroscopy for slightly overdoped Bi2Sr2CaCu2O8+δ . / Suzuki, Minoru; Watanabe, Takao; Matsuda, Azusa.

In: Physical Review Letters, Vol. 82, No. 26 I, 28.06.1999, p. 5361-5364.

Research output: Contribution to journalArticle

Suzuki, Minoru ; Watanabe, Takao ; Matsuda, Azusa. / Interlayer tunneling spectroscopy for slightly overdoped Bi2Sr2CaCu2O8+δ In: Physical Review Letters. 1999 ; Vol. 82, No. 26 I. pp. 5361-5364.
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