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Chain-oxygen vacancy model of the centre in

and

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, , Citation P Rubin and N Kristoffel 1998 J. Phys.: Condens. Matter 10 L127 DOI 10.1088/0953-8984/10/8/003

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1 Institute of Physics, Tartu University, EE2400 Tartu, Estonia

Dates

  1. Received 17 September 1997

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0953-8984/10/8/L127

Abstract

By using the Green's function method, the localized state energy for an electron trapped in the chain-oxygen vacancy in has been calculated. At reasonable parameter values it lies above the chain- and plane-oxygen band top. Correspondingly the formation of a stable chain centre can be supposed, as in the mechanism (Federici J F et al 1995 Phys. Rev. B 52 15592) of photoinduced conductivity.

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10.1088/0953-8984/10/8/003