RAMAN AND TUNNELING SPECTROSCOPY OF BI2SR2CACU2O8

We report the experimental results of a tunneling study of high-T(c) B i2Sr2CaCu2O8 (BSCCO) single crystals. The tunneling conductances G(V, T) of Pb-I-BSCCO junctions were investigated in the temperature range from 4.2 to 95 K. The superconducting energy gap 2DELTA at 4.2 K was e stimated as 58 meV. The polarized Raman spectra of BSCCO single crysta ls were also obtained at room temperature. The Raman active side-band can be attributed to a two-magnon scattering mechanism.