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2011 | 9 | 3 | 690-697
Tytuł artykułu

The dependence of critical temperature on oxygen concentration in YBa2Cu3O6+x in terms of the fragmented chain model

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
An extended ASYNNNI model, that beside nearest-neighbour and next-nearest neighbour O-O interactions in the basal plane also includes interactions between the three nearest oxygen atoms, is used to describe the statistics of CuO chain fragmentation and to calculate doping and T c in YBa2Cu3O6+x . Calculations were made by the Monte Carlo method employing the recently proposed charge transfer model that assumes only chains whose length is equal to, or exceeds, a characteristic (critical) length, l cr, can provide holes to the layers and contribute to doping p. The obtained p(x) is then combined with a universal T c versus p relation to yield T c(x) characteristics that correlate remarkably with those reported in recent experiments. The best coordination between theoretical and experimental T c(x) characteristics has been achieved for l cr = 2, implying that only isolated basal plane oxygen atoms (trivial chains) do not contribute holes to CuO2 layers.
Słowa kluczowe
Wydawca
Czasopismo
Rocznik
Tom
9
Numer
3
Strony
690-697
Opis fizyczny
Daty
wydano
2011-06-01
online
2011-02-26
Twórcy
  • Laboratory of Theoretical Physics, Institute of Nuclear Sciences “Vinca”, P.O.Box 522, 11001, Belgrade, Serbia , mikac@vinca.rs
  • Laboratory of Theoretical Physics, Institute of Nuclear Sciences “Vinca”, P.O.Box 522, 11001, Belgrade, Serbia
  • Laboratory of Theoretical Physics, Institute of Nuclear Sciences “Vinca”, P.O.Box 522, 11001, Belgrade, Serbia
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-010-0060-6
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