Посилання:Analysis of the pseudogap-related structure in tunnel
spectra of the superconducting Bi₂Sr₂CaCu₂O₈₊δ
revealed by break-junction technique / T. Ekino, A.M. Gabovich, A.I. Voitenko // Физика низких температур. — 2008. — Т. 34, № 6. — С. 515–519. — Бібліогр.: 35 назв. — англ.
Підтримка:The authors are grateful to Kasa im. J sefa Mianowskiego,
Polski Koncern Naftowy ORLEN, and Fundacja
Zygmunta Zaleskiego for the financial support of their
visits to Warsaw. AMG is grateful as well to the Japan Society
for the Promotion of Science (FY2007 JSPS Fellowship
Program, Grant No. S-07042) for the invitation to
Hiroshima University. We are grateful to Prof. Eduard
Rudenko for discussions on the modulation method.
Tunnel conductance G(V)for break-junctions made of as-grown single-crystal Bi₂Sr₂CaCu₂O₈₊δ 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.