Interlayer Tunneling Spectroscopy for Bi2Sr2CaCu2O8+δ Using Intrinsic Junctions

  • Minoru Suzuki
  • Takao Watanabe
  • Azusa Matsuda
Conference paper


By means of the interlayer tunneling spectroscopy, which employs very thin mesas comprised of approximately 10 series-connected intrinsic tunnel Josephson junctions of Bi2Sr2CaCu2O8+δ, we have obtained the following important findings. The normal tunneling resistance exhibits linear temperature dependence above T c, and shows a sharp drop below T c, implying that the major in-plane scattering of quasiparticles is due to electron-electron interaction. The superconducting gap is clearly discriminated from the pseudogap, which is at variance with a previously accepted picture for the relationship between the superconducting gap and the pseudogap.


Versus Curve Josephson Junction Tunnel Junction Tunneling Resistance Scanning Tunneling Spectroscopy 
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Copyright information

© Springer Japan 2000

Authors and Affiliations

  • Minoru Suzuki
    • 1
  • Takao Watanabe
    • 2
  • Azusa Matsuda
    • 2
  1. 1.Department of Electronic Science and EngineeringKyoto UniversityKyotoJapan
  2. 2.NTT Basic Research LaboratoriesWakamiya, Atsugi, KanagawaJapan

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