Local electronic structure of doping atoms in MA2Can-1CunO2n+3 high-Tc superconductors with [M-12(n-1)n] type structures

E. Z. Kurmaev, A. Moewes, N. D. Zhigadlo, E. Takayama-Muromachi, I. A. Nekrasov, O. A. Bureev, G. T. Woods, T. A. Callcott, Yu M. Yarmoshenko, S. N. Shamin, D. L. Ederer, M. Yanagihara

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2 Citations (Scopus)


Results of x-ray fluorescence measurements of MA2Can-1CunO2n+3 compounds with [M-12(n - 1)n] type structures, (C0.8N0.2Sr2CuO5.3, [Cu0.25(C,N)0.75]Sr2CaCu2 Oy, Cu0.5 V0.5Sr2CaCu2O7.5, Cu0.5 V0.5Sr2Ca2Cu3O9.4, Cu0.5 V0.5Sr2(Ca3.6Sr0.4) Cu5O13.5 and Cu0.5 V0.5Sr2(Ca4.7Sr0.3) Cu6O15.3), are presented. The experiments show that C-atoms form a distorted CO3 oxyacid group with a partial substitution of copper and nitrogen atoms in the M-sites. We conclude that the CO32- group in (C,N) Sr2Can-1CunOy and (Cu,C,N) Sr2Can-1 CunOy is substituted by the NO2- which induces the creation of the hole carriers in these compounds. We have found that V-atoms in the given compounds form (VO4)3- tetrahedrons and have a pentavalent state.

Original languageEnglish
Pages (from-to)1345-1349
Number of pages5
JournalSurface Review and Letters
Issue number2
Publication statusPublished - 2002 Apr 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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