Electronic Raman scattering in Bi2Sr2CaCu2O8+δ excited with c-axis polarized light

H. L. Liu*, G. Blumberg, M. V. Klein, P. Guptasarma, D. G. Hinks


研究成果: 雜誌貢獻會議論文同行評審


We report on the electronic Raman spectra excited and detected with photon polarization directions along the c-axis in Bi2Sr2CaCu2O8+δ 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. Below Tc, there is a low-frequency redistribution of the electronic continuum and the formation of a 2Δ peak in the superconducting state. The monotonic increase of 2Δ and 2Δ/kBTc with decreasing doping is unusual. In particular, this 2Δ feature, which has A1g symmetry, is found at higher frequencies than those seen in the planar symmetries for all doping levels studied.

頁(從 - 到)2181-2184
期刊Physica C: Superconductivity and its applications
341-348 (IV)
出版狀態已發佈 - 2000 11月
事件International Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors VI - Houston, TX, USA
持續時間: 2000 2月 202000 2月 25

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學
  • 能源工程與電力技術
  • 電氣與電子工程


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