Misfit Dislocation Guided Topographic and Conduction Patterning in Complex Oxide Epitaxial Thin Films
Sandiumenge Ortiz, Felip (Institut de Ciència de Materials de Barcelona)
Bagués Salgueró, Núria (Institut Català de Nanociència i Nanotecnologia)
Santiso, José (Institut Català de Nanociència i Nanotecnologia)
Paradinas Aranjuelo, Marcos (Institut Català de Nanociència i Nanotecnologia)
Pomar, Alberto (Institut de Ciència de Materials de Barcelona)
Konstantinovic, Zorica (University of Belgrade)
Ocal García, Carmen (Institut de Ciència de Materials de Barcelona)
Balcells Argemí, Lluís (Institut de Ciència de Materials de Barcelona)
Casanove, Marie-Jo (Universite de Toulouse)
Martínez, Benjamín (Institut de Ciència de Materials de Barcelona)

Date:	2016
Abstract:	Interfacial dissimilarity has emerged in recent years as the cornerstone of emergent interfacial phenomena, while enabling the control of electrical transport and magnetic behavior of complex oxide epitaxial films. As a step further toward the lateral miniaturization of functional nanostructures, this work uncovers the role of misfit dislocations in creating periodic surface strain patterns that can be efficiently used to control the spatial modulation of mass transport phenomena and bandwidth-dependent properties on a ≈20 nm length scale. The spontaneous formation of surface strain-relief patterns in LaSrMnO/LaAlO films results in lateral periodic modulations of the surface chemical potential and tetragonal distortion, controlling the spatial distribution of preferential nucleation sites and the bandwidth of the epilayer, respectively. These results provide insights into the spontaneous formation of strain-driven ordered surface patterns, topographic and functional, during the growth of complex oxide heterostructures on lengths scales far below the limits achievable through top-down approaches.
Grants:	Ministerio de Economía y Competitividad SEV-2015-0496 Ministerio de Economía y Competitividad MAT2015-71664-R Ministerio de Economía y Competitividad MAT2012-33207 Ministerio de Economía y Competitividad MAT2013-47869-C4-1-P European Commission 645658 Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-501 European Commission 312483
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Complex oxides ; Misfit dislocations ; Strain ; Surface current ; Surface patterning
Published in:	Advanced materials interfaces, Vol. 3, Issue 14 (July 2016) , art. 1600106, ISSN 2196-7350

DOI: 10.1002/admi.201600106

Postprint 29 p, 820.2 KB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles