Raman scattering study of heavily oxygenated YSr2Cu3O7+δ and AuBa2YCu2O7+δ superconductors

A. P. Litvinchuk, M. N. Iliev, H. G. Lee, M. V. Abrashev, L. M. Dezaneti, B. R. Hickey, Y. Y. Xue, C. W. Chu

研究成果: Conference article同行評審

摘要

Raman scattering spectroscopy was used to monitor structural peculiarities and charge distribution in highly oxygenated YSr2Cu3O7+δ and AuBa2YCu2O7+δ superconductors, which do not possess linear copper-oxygen chains. The oxidation state of the chain metal ions (Cu or Au) in these materials was estimated by comparison of the experimentally determined frequency of the c-axis apex oxygen vibration and the results of model calculations which account for the nearest-neighbor interactions. The enrichment of the Raman spectra with respect to optimally doped RBa2Cu3O6.95 superconductors is interpreted as being due to the lower symmetry of atomic sites in the basal plane.

原文English
頁(從 - 到)2205-2208
頁數4
期刊Physica C: Superconductivity and its applications
341-348 (IV)
DOIs
出版狀態Published - 2000 十一月
事件International Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors VI - Houston, TX, USA
持續時間: 2000 二月 202000 二月 25

All Science Journal Classification (ASJC) codes

  • 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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