Epitaxial mismatch strain in YBa_(2)Cu_(3)O_(7-δ)/PrBa_(2)Cu_(3)O_(7) superlattices
| dc.contributor.author | Varela Del Arco, María | |
| dc.contributor.author | Arias Serna, Diego | |
| dc.contributor.author | Sefrioui, Zouhair | |
| dc.contributor.author | León Yebra, Carlos | |
| dc.contributor.author | Ballesteros, C. | |
| dc.contributor.author | Santamaría Sánchez-Barriga, Jacobo | |
| dc.date.accessioned | 2023-06-20T20:08:09Z | |
| dc.date.available | 2023-06-20T20:08:09Z | |
| dc.date.issued | 2000-11-01 | |
| dc.description | © 2000 The American Physical Society. Financial support from CICYT Grants No. MAT94-0604 and No. MAT97-0675 is acknowledged. | |
| dc.description.abstract | The effects of epitaxial strain in ultrathin YBa_(2)Cu_(3)O_(7-δ) layers have been investigated by x-ray diffraction and transmission electron microscopy. The samples used were high quality [YBa_(2)Cu_(3)O_(7-δ)(YBCO)_(N)/PrBa_(2)Cu_(3)O_(7)(PBCO)_(M)]_(1000 Å) superlattices, grown by high oxygen pressure sputtering, with N ranging between 1 and 12 unit cells and M55 unit cells. Superlattice structure is refined by fitting x-ray spectra to a structural model containing disorder related parameters. Epitaxial mismatch strain and the absence of step disorder are found for YBCO layer thickness below 4 unit cells. A surprising reorganization of interatomic distances results, which seems to correlate with the decrease in the critical temperature. For larger YBCO layer thickness, stress relaxes and step disorder builds up. Transmission electron microscopy observations show the presence of α-axis orientated microdomains, which seem to be correlated to the release of epitaxial strain, provided in plane mismatch is smaller in this orientation. | |
| dc.description.department | Depto. de Estructura de la Materia, Física Térmica y Electrónica | |
| dc.description.faculty | Fac. de Ciencias Físicas | |
| dc.description.refereed | TRUE | |
| dc.description.sponsorship | CICYT | |
| dc.description.status | pub | |
| dc.eprint.id | https://eprints.ucm.es/id/eprint/31181 | |
| dc.identifier.doi | 10.1103/PhysRevB.62.12509 | |
| dc.identifier.issn | 0163-1829 | |
| dc.identifier.officialurl | http://dx.doi.org/10.1103/PhysRevB.62.12509 | |
| dc.identifier.relatedurl | http://journals.aps.org/ | |
| dc.identifier.uri | https://hdl.handle.net/20.500.14352/59647 | |
| dc.issue.number | 18 | |
| dc.journal.title | Physical review B | |
| dc.language.iso | eng | |
| dc.page.final | 12515 | |
| dc.page.initial | 12509 | |
| dc.publisher | American Physical Society | |
| dc.relation.projectID | MAT94-0604 | |
| dc.relation.projectID | MAT97-0675 | |
| dc.rights.accessRights | open access | |
| dc.subject.cdu | 537 | |
| dc.subject.keyword | X-ray-diffraction | |
| dc.subject.keyword | Charge-transfer | |
| dc.subject.keyword | Temperature | |
| dc.subject.keyword | Superconductors | |
| dc.subject.keyword | YBa_(2)Cu_(3)O_(7- | |
| dc.subject.ucm | Electricidad | |
| dc.subject.ucm | Electrónica (Física) | |
| dc.subject.unesco | 2202.03 Electricidad | |
| dc.title | Epitaxial mismatch strain in YBa_(2)Cu_(3)O_(7-δ)/PrBa_(2)Cu_(3)O_(7) superlattices | |
| dc.type | journal article | |
| dc.volume.number | 62 | |
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