Spin diffusion versus proximity effect at ferromagnet/superconductor La_(0.7)Ca_(0.3)MnO_(3)/YBa_(2)Cu_(3)O_(7-δ) interfaces
| dc.contributor.author | Peña, V. | |
| dc.contributor.author | Visani, C. | |
| dc.contributor.author | Garcia Barriocanal, Javier | |
| dc.contributor.author | Arias Serna, Diego | |
| dc.contributor.author | Sefrioui, Zouhair | |
| dc.contributor.author | León Yebra, Carlos | |
| dc.contributor.author | Santamaría Sánchez-Barriga, Jacobo | |
| dc.contributor.author | Almasán, Carmen A. | |
| dc.date.accessioned | 2023-06-20T10:54:01Z | |
| dc.date.available | 2023-06-20T10:54:01Z | |
| dc.date.issued | 2006-03-27 | |
| dc.description | © 2006 The American Physical Society. This work was supported by MCYT MAT 2005-06024 and CAM GR-MAT-0771/2004. | |
| dc.description.abstract | We report on the interplay between magnetism and superconductivity in La_(0.7)Ca_(0.3)MnO_(3)/YBa_(2)Cu_(3)O_(7) structures. We have grown heterostructures (bilayers and trilayers) with a constant thickness of the ferromagnetic layer of 40 unit cells (15 nm) and changing the thickness of the superconductor between 1 (1.2 nm) and 40 unit cells (48 nm). The critical temperature of the bilayers decreases when the thickness of the superconductor is reduced below 10 unit cells, thus providing an estimate of the length scale of superconductivity suppression by spin-polarized quasiparticles in YBa_(2)Cu_(3)O_(7-δ) (YBCO) of 10 nm, much larger than the coherence length. For thickness of the YBCO layer smaller than 4 unit cells; a second mechanism of superconductivity depression comes into play, probably related to the ferromagnetic/superconducting proximity effect. The relative importance in depressing the critical temperature of intrinsic mechanisms (quasiparticle diffusion and proximity effect) and extrinsic ones (intralayer disorder, interface roughness, or reduced dimensionality of ultrathin layers) is discussed. | |
| 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 | MCYT | |
| dc.description.sponsorship | CAM | |
| dc.description.status | pub | |
| dc.eprint.id | https://eprints.ucm.es/id/eprint/30586 | |
| dc.identifier.doi | 10.1103/PhysRevB.73.104513 | |
| dc.identifier.issn | 1098-0121 | |
| dc.identifier.officialurl | http://dx.doi.org/10.1103/PhysRevB.73.104513 | |
| dc.identifier.relatedurl | http://journals.aps.org/ | |
| dc.identifier.uri | https://hdl.handle.net/20.500.14352/51417 | |
| dc.issue.number | 10 | |
| dc.journal.title | Physical review B | |
| dc.language.iso | eng | |
| dc.publisher | American Physical Society | |
| dc.relation.projectID | MAT 2005-06024 | |
| dc.relation.projectID | GR-MAT-0771/2004 | |
| dc.rights.accessRights | open access | |
| dc.subject.cdu | 537 | |
| dc.subject.keyword | Superconducting transition | |
| dc.subject.keyword | Superlattices | |
| dc.subject.keyword | Multilayers | |
| dc.subject.keyword | Ferromagnet | |
| dc.subject.keyword | Temperature | |
| dc.subject.keyword | Heterostructures | |
| dc.subject.keyword | Injection | |
| dc.subject.keyword | Magnetism | |
| dc.subject.keyword | Magnetoresistance | |
| dc.subject.keyword | Trilayers. | |
| dc.subject.ucm | Electricidad | |
| dc.subject.ucm | Electrónica (Física) | |
| dc.subject.unesco | 2202.03 Electricidad | |
| dc.title | Spin diffusion versus proximity effect at ferromagnet/superconductor La_(0.7)Ca_(0.3)MnO_(3)/YBa_(2)Cu_(3)O_(7-δ) interfaces | |
| dc.type | journal article | |
| dc.volume.number | 73 | |
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