Investigation of low-energy electronic response in high-Tc superconductors by Raman spectroscopy

Akio Yamanaka; Norio Asayama; Takashi Furutani; Kuon Inoue; Shunji Takekawa

doi:10.1117/12.241779

10 June 1996 Investigation of low-energy electronic response in high-T_c superconductors by Raman spectroscopy

Akio Yamanaka, Norio Asayama, Takashi Furutani, Kuon Inoue, Shunji Takekawa

Proceedings Volume 2696, Spectroscopic Studies of Superconductors; (1996) https://doi.org/10.1117/12.241779
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

Low-energy electronic response due to single-particle excitations has been investigated in high-T_c copper-oxide Bi₂Sr₂CaCu₂O_8+(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 B_1g the suppression of the low-energy spectral weight of the electronic continuum due to an opening of the superconducting gap occurs abruptly below T_c, whereas that of the B_2g-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.

Citation Download Citation

Akio Yamanaka, Norio Asayama, Takashi Furutani, Kuon Inoue, and Shunji Takekawa "Investigation of low-energy electronic response in high-T_c superconductors by Raman spectroscopy", Proc. SPIE 2696, Spectroscopic Studies of Superconductors, (10 June 1996); https://doi.org/10.1117/12.241779

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