Investigation of the Tunneling Spectra in HgBr2-Intercalated Bi-2212 Single Crystals Below and Above Tc
Interlayer tunneling spectroscopy measurements were performed on mesa arrays of Bi-2212 single crystals, intercalated with HgBr2. Tunneling conductances were obtained over a wide temperature range to examine the spectral features, especially the behavior of the quasiparticle peaks corresponding to superconducting energy gaps (SGs). Experimental spectra showed that gap-like features are still present even for the temperatures far above the transition temperature, Tc. This evidence is consistent with the idea that the SG evolves into a pseudogap above Tc for HgBr2-intercalated Bi-2212 single crystals.
C. Kurter et al., "Investigation of the Tunneling Spectra in HgBr2-Intercalated Bi-2212 Single Crystals Below and Above Tc," Physica C: Superconductivity and its Applications, vol. 460-462 II, no. SPEC. ISS., pp. 1090-1091, Elsevier, Sep 2007.
The definitive version is available at http://dx.doi.org/10.1016/j.physc.2007.03.222
Geosciences and Geological and Petroleum Engineering
Keywords and Phrases
Bismuth compounds; Intercalation; Josephson junction devices; Measurement theory; Mercury compounds; Single crystals; Spectroscopic analysis; Intrinsic Josephson junctions; Pseudogaps; Tunneling spectroscopy; Scanning tunneling microscopy
International Standard Serial Number (ISSN)
Article - Journal
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