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Model for superconductivity in optimally doped electron cuprates

Model for superconductivity in optimally doped electron cuprates

The very anomalous normal state properties and superconductivity of electron-doped supercon-ducting cuprates with the T* structure are discussed. The literature values of high mobilities for electrons and holes are explained by the electrons and holes existing in different layers. The...

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Bibliographic Details
Main Authors: Geballe, T.H., Moyzhes, B.Y.
Format: Article
Language:English
Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2001
Series:Физика низких температур
Subjects:
Статьи, посвященные столетию со дня рождения Л. В. Шубникова
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/129006
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Summary:The very anomalous normal state properties and superconductivity of electron-doped supercon-ducting cuprates with the T* structure are discussed. The literature values of high mobilities for electrons and holes are explained by the electrons and holes existing in different layers. The annealing procedures necessary for superconductivity produce oxygen-vacancy negative-U pairing centers. The relative insensitivity of Tc to the annealing condition is attributed to stabilization of the chemical potential near the middle of the narrow oxygen band formed by oxygen vacancies where the electronic entropy is large.

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