Semiconductivity in YBa2-xSrxCu3Oy
Küçük Resim Yok
Tarih
1996
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Amer Inst Physics
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Structural and electrical properties of YBa(2-x)Sr(x)Cu3O(y) prepared under ambient oxygen pressure were systematically investigated for 0 less than or equal to x less than or equal to 2.0. Samples with high Sr contents, x greater than or equal to 1.7, showed semiconductive properties with an activation energy of similar to 150 meV at high temperature, T greater than or equal to 80 K. At low temperatures, T less than or equal to 80 K, activation energy dropped to similar to 3.00 and similar to 0.85 meV for x=1.7-1.8 and x=1.9-2.0, respectively. It is argued that YSr2Cu3Oy is likely to have a tetragonal structure and that the disorder introduced by Sr substitution affects electrical conduction, which involves charge hopping between the CuO chains at high Sr contents. (C) 1996 American Institute of Physics.
Açıklama
Anahtar Kelimeler
Superconductivity, Yba2cu3o7-Y, Resistivity, Transport, Inplane
Kaynak
Journal of Applied Physics
WoS Q Değeri
N/A
Scopus Q Değeri
N/A
Cilt
80
Sayı
4
