10 June 1996 Investigation of low-energy electronic response in high-Tc superconductors by Raman spectroscopy
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Abstract
Low-energy electronic response due to single-particle excitations has been investigated in high-Tc copper-oxide Bi2Sr2CaCu2O8+(delta ) single-crystals by Raman scattering spectroscopy. We find that the low-energy electronic response in the superconducting phase depends significantly on polarization configuration. For tetragonal B1g the suppression of the low-energy spectral weight of the electronic continuum due to an opening of the superconducting gap occurs abruptly below Tc, whereas that of the B2g-response shows a gradual temperature dependence. The symmetry-dependent superconducting response is basically consistent with the superconducting order parameter having a nodal structure with X2-Y2 symmetry.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Akio Yamanaka, Norio Asayama, Takashi Furutani, Kuon Inoue, and Shunji Takekawa "Investigation of low-energy electronic response in high-Tc superconductors by Raman spectroscopy", Proc. SPIE 2696, Spectroscopic Studies of Superconductors, (10 June 1996); doi: 10.1117/12.241779; https://doi.org/10.1117/12.241779
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