Analysis of the pseudogap-related structure in tunnel spectra of the superconducting Bi2Sr2CaCu2O8+d revealed by break-junction technique

Автор(и)

  • T. Ekino Hiroshima University, Faculty of Integrated Arts and Sciences 1-7-1, Kagamiyama, Higashi-Hiroshima 739-8521, Japan
  • A.M. Gabovich Institute of Physics of the National Academy of Sciences of Ukraine, 46 Nauka Ave., Kyiv 03680, Ukraine
  • A.I. Voitenko Institute of Physics of the National Academy of Sciences of Ukraine, 46 Nauka Ave., Kyiv 03680, Ukraine

DOI (Low Temperature Physics):


https://doi.org/10.1063/1.2920074

Ключові слова:

superconductivity, charge-density waves, non-homogeneity, tunneling, dip-hump structure.

Анотація

Tunnel conductance G(V)for break-junctions made of as-grown single-crystal Bi2Sr2CaCu2O8+d samples with Tc ≈ 86-89 K was measured and clear-cut dip-hump structures (DHSs) were found in the range 80 - 120mV of the bias voltage V. The theory of tunneling in symmetric junctions between inhomogeneous charge-density-wave (CDW) superconductors, considered in the framework of the s-pairing model, has been developed. CDWs have been shown to be responsible for the appearance of the DHS in the tunnel current-voltage characteristics and properly describes experimental results.

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Опубліковано

2008-04-18

Як цитувати

(1)
T. Ekino, A.M. Gabovich, and A.I. Voitenko, Analysis of the pseudogap-related structure in tunnel spectra of the superconducting Bi2Sr2CaCu2O8+d revealed by break-junction technique, Low Temp. Phys. 34, (2008) [Fiz. Nizk. Temp. 34, 515-519, (2008)] DOI: https://doi.org/10.1063/1.2920074.

Номер

Том 34 № 6 (2008)

Розділ

Надпровідність, зокрема високотемпературна

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