Model for superconductivity in optimally doped electron cuprates

• Published in: Физика низких температур
• Date: 2001
• 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
• Subjects: Статьи, посвященные столетию со дня рождения Л. В. Шубникова
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/129006
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Model for superconductivity in optimally doped electron cuprates / T.H. Geballe B.Y. 
 
 Moyzhes // Физика низких температур. — 2001. — Т. 27, № 9-10. — С. 1053-1055. — Бібліогр.: 18 назв. — англ.

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.