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Proceedings Paper

Tunneling and Raman scattering in ab plane of Bi2Sr2CaCu2O8 single crystal
Author(s): Bronislaw Susla; Miroslaw Drozdowski; Marek Kozielski; Tomasz Runka; Miroslaw Szybowicz
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Paper Abstract

Experimental results of tunneling and Raman scattering of the high-Tc superconductor Bi2Sr2 CaCu2 O8 (BSCCO) are reported. Tunneling T-dependent conductance G(V,T) of evaporated Pb junctions on cleaved ab planes of the BSCCO (2:2:1:2) crystals is presented. We obtained a large energy gap, approximately (Delta) equals 26 meV at 4.2 K or 2(Delta) /kBTc equals 6.7. Temperature dependences of tunneling characteristics are in agreement with the well-known dependences for conventional superconductors. Raman spectra of the BSCCO single crystals were also performed in two different temperatures and excited with different laser lines. The typical Raman spectra of those kinds of crystals possess active sideband, which can be presumably attributed to the two- magnon scattering mechanism and high microscope superexchange constant Jexch was estimated.

Paper Details

Date Published: 16 October 1995
PDF: 7 pages
Proc. SPIE 2373, Solid State Crystals: Materials Science and Applications, (16 October 1995);
Show Author Affiliations
Bronislaw Susla, Poznan Univ. of Technology (Poland)
Miroslaw Drozdowski, Poznan Univ. of Technology (Poland)
Marek Kozielski, Poznan Univ. of Technology (Poland)
Tomasz Runka, Poznan Univ. of Technology (Poland)
Miroslaw Szybowicz, Poznan Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 2373:
Solid State Crystals: Materials Science and Applications
Jozef Zmija, Editor(s)

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