J. Paraszczak, J.M. Shaw, et al.
Micro and Nano Engineering
Paper
Anisotropy of oxygen transport in YBa2Cu3O7: The role of the [1/2, b,0] tunnels
Abstract
We calculated the potential of interstitial oxygen in YBa2Cu3O7 using effective medium theory. We found that there is no potential energy barrier for oxygen motion in the [1/2, b,0] tunnel. Oxygen motion in the a and c directions requires overcoming barriers of 1.7 and 1.6 eV. Implications for superconductivity and oxygen diffusion are given. © 1988 Elsevier Science Publishers B.V.
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