16 October 1995 Tunneling and Raman scattering in ab plane of Bi2Sr2CaCu2O8 single crystal
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Proceedings Volume 2373, Solid State Crystals: Materials Science and Applications; (1995) https://doi.org/10.1117/12.224971
Event: Solid State Crystals: Materials Science and Applications, 1994, Zakopane, Poland
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.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bronislaw Susla, Bronislaw Susla, Miroslaw Drozdowski, Miroslaw Drozdowski, Marek Kozielski, Marek Kozielski, Tomasz Runka, Tomasz Runka, Miroslaw Szybowicz, Miroslaw Szybowicz, "Tunneling and Raman scattering in ab plane of Bi2Sr2CaCu2O8 single crystal", Proc. SPIE 2373, Solid State Crystals: Materials Science and Applications, (16 October 1995); doi: 10.1117/12.224971; https://doi.org/10.1117/12.224971
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