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Suppression of superconductivity at the nanoscale in chemical solution derived YBa(2)Cu(3)O(7−δ) thin films with defective Y(2)Ba(4)Cu(8)O(16) intergrowths
The analysis of the microstructure and superconducting behavior of chemical solution deposited epitaxial YBa(2)Cu(3)O(7−δ) films, with thickness going down to 5 nm has been carried out with the purpose to disclose the behavior of the most common intergrowth in these films, the Y(2)Ba(4)Cu(8)O(16). T...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
RSC
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9418937/ https://www.ncbi.nlm.nih.gov/pubmed/36134255 http://dx.doi.org/10.1039/d0na00456a |
Sumario: | The analysis of the microstructure and superconducting behavior of chemical solution deposited epitaxial YBa(2)Cu(3)O(7−δ) films, with thickness going down to 5 nm has been carried out with the purpose to disclose the behavior of the most common intergrowth in these films, the Y(2)Ba(4)Cu(8)O(16). The analysis of ultrathin films is a unique opportunity to investigate the superconducting behavior of these nanoscale defects because of the high concentration created as a consequence of the elastic energy associated to the misfit strain. Magnetic susceptibility and X-ray diffraction measurements evidence a strong decrease of the superconducting volume correlated with an increase of the intergrowth volume fraction. We demonstrate that these intergrowths are non-superconducting nanoscale regions where Cooper pair formation is disrupted, in agreement with their key role as artificial pinning centers for vortices in YBa(2)Cu(3)O(7−δ) films and coated conductors. |
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