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تسجيل مستخدم جديدC-axis electronic Raman scattering in Bi_2Sr_2CaCu_2O_{8+delta}
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We report a c-axis-polarized electronic Raman scattering study of Bi_2Sr_2CaCu_2O_{8+delta} single crystals. In the normal state, a resonant electronic continuum extends to 1.5 eV and gains significant intensity as the incoming photon energy increases. In the superconducting state, a coherence 2Delta peak appears around 50 meV, with a suppression of the scattering intensity at frequencies below the peak position. The peak energy, which is higher than that seen with in-plane polarizations, signifies distinctly different dynamics of quasiparticle excitations created with out-of-plane polarization.
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