Van der Waals gaps in Sm1+xBa2-xCu3O y and their effect on superconductivity Article

Nishchenko, MM, Likhtorovich, SP, Drozd, VA et al. (2002). Van der Waals gaps in Sm1+xBa2-xCu3O y and their effect on superconductivity . 38(3), 162-167. 10.1023/A:1019600901671

cited authors

  • Nishchenko, MM; Likhtorovich, SP; Drozd, VA; Nedil'ko, SA; Baginskii, IL

authors

abstract

  • We have used electron-positron annihilation to study superconducting cuprates Sm1+xBa2-xCu3Oy. We have determined the average radii for oxygen ions in Sm1+xBa 2-xCu3Oy. Taking into account the ion coordinates and their radii, we have constructed a geometric model for the arrangement of copper and oxygen ions in CuO2 layers in the [b →, c→] plane, responsible for the superconductivity. From these data, we have determined the length of the ionic/covalent bonds and the width of the interionic gaps. We have established the effect of the features of the atomic structure of Sm1+xBa 2-xCu3Oy on the superconducting transition temperature Tc and we have shown that Tc increases as ΔX increases. ©2002 Plenum Publishing Corporation.

publication date

  • January 1, 2002

Digital Object Identifier (DOI)

start page

  • 162

end page

  • 167

volume

  • 38

issue

  • 3