2026-06-28T10:28:11Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/593332023-08-25T19:29:28Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Lucía Mulas, María Luisa
author
Sánchez Quesada, Francisco
author
Santamaría Sánchez-Barriga, Jacobo
author
Sefrioui, Zouhair
author
Arias Serna, Diego
author
Loos, G.
author
Navacerrada, M.A.
2023-06-20T19:09:47Z
2023-06-20T19:09:47Z
2000-05-29
0003-6951
10.1063/1.126609
https://hdl.handle.net/20.500.14352/59333
http://dx.doi.org/10.1063/1.126609
http://scitation.aip.org/
We have studied the effect of He+ irradiation with doses in the range 10(12)-2x10(15) cm(-2) on two high-temperature superconducting structures: YBa2Cu3O7-x (YBCO) films and YBa2Cu3O7-x/PrBa2Cu3O7 (YBCO/PBCO) superlattices. In particular we have focused on superlattices [YBCON/PBCOM](1000 Angstrom) with N=1, 8 unit cells of YBCO, and M=5 unit cells of PBCO, with a total thickness of 1000 Angstrom. The analysis is presented in terms of depression of the critical temperature (T-c) and modification of the crystalline structure using X ray refinement technique. Single films show a systematic increase in the c-lattice parameter upon irradiation, which is not observed in thin one unit cell YBCO layers in superlattice structures. However, T-c depression resulting from irradiation is deeper in superlattices. These results are explained considering the strained nature of the as-grown [YBCON/PBCO5](1000 Angstrom) superlattices with low values of N. Both structures show persistent photoconductivity, indicating that defects are related to oxygen displacements in the Cu-O chains.
eng
Critical temperature depression and persistent photoconductivity in ion irradiated YBa2Cu3O7-x films and YBa2Cu3O7-x/PrBa2Cu3O7 superlattices
journal article
URL
https://docta.ucm.es/bitstreams/23baecd0-7f05-411c-b675-12057e26154f/download
File
MD5
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244818
application/pdf
Lucia,ML24libre.pdf
URL
https://docta.ucm.es/bitstreams/97e9641b-ee5c-4638-99af-50e7aee78353/download
File
MD5
aa243351c6ed465b32964e93df822518
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text/plain
Lucia,ML24libre.pdf.txt