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Condensed Matter > Superconductivity

arXiv:cond-mat/9907159 (cond-mat)
[Submitted on 10 Jul 1999]

Title:Pseudo-gap features of intrinsic tunneling in (HgBr_2)-Bi2212 single crystals

Authors:A.Yurgens, D.Winkler, T.Claeson (Chalmers University of Technology, Sweden)Seong-Ju Hwang, Jin-Ho Choy (Department of Chemistry, Seoul National University,Korea)
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Abstract: The c-axis tunneling properties of both pristine Bi2212 and its HgBr$_2$ intercalate have been measured in the temperature range 4.2 - 250 K. Lithographically patterned 7-10 unit-cell heigh mesa structures on the surfaces of these single crystals were investigated. Clear SIS-like tunneling curves for current applied in the $\it c$-axis direction have been observed. The dynamic conductance d$I/$d$V(V)$ shows both sharp peaks corresponding to a superconducting gap edge and a dip feature beyond the gap, followed by a wide maximum, which persists up to a room temperature. Shape of the temperature dependence of the {\it c}-axis resistance does not change after the intercalation suggesting that a coupling between $\rm CuO_2$-bilayers has little effect on the pseudogap.
Comments: 6 pages, 5 figures; presented at the Second Int Conf. New3Sc-1999 (Las Vegas, NV)
Subjects: Superconductivity (cond-mat.supr-con)
Cite as: arXiv:cond-mat/9907159 [cond-mat.supr-con]
  (or arXiv:cond-mat/9907159v1 [cond-mat.supr-con] for this version)
  https://doi.org/10.48550/arXiv.cond-mat/9907159
Journal reference: Int. J. Mod. Phys. B 13, 3758-63 (1999).
Related DOI: https://doi.org/10.1142/S0217979299003878

Submission history

From: August Yurgens [view email]
[v1] Sat, 10 Jul 1999 22:19:13 UTC (391 KB)
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