Title

Investigation of the Tunneling Spectra in HgBr2-Intercalated Bi-2212 Single Crystals Below and Above Tc

Abstract

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.

Department(s)

Physics

Second Department

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)

0921-4534

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2007 Elsevier, All rights reserved.

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