Tunneling and Raman scattering in ab plane of Bi2Sr2CaCu2O8 single crystal

Bronislaw Susla; Miroslaw Drozdowski; Marek Kozielski; Tomasz Runka; Miroslaw Szybowicz

doi:10.1117/12.224971

16 October 1995 Tunneling and Raman scattering in ab plane of Bi2Sr2CaCu2O8 single crystal

Bronislaw Susla, Miroslaw Drozdowski, Marek Kozielski, Tomasz Runka, Miroslaw Szybowicz

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-T_c 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) /k_BT_c 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 J_exch was estimated.

Citation Download Citation

Bronislaw Susla, Miroslaw Drozdowski, Marek Kozielski, Tomasz Runka, and 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); https://doi.org/10.1117/12.224971

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