70690 20190709135433.0 doi 10.1103/PhysRevB.95.165138 sideral 99066 ART-2017-99066 eng Iglesias, L. Oxygen vacancies in strained SrTiO3 thin films: Formation enthalpy and manipulation 2017 Access copy available to the general public Unrestricted We report the enthalpy of oxygen vacancy formation in thin films of electron-doped SrTiO3, under different degrees of epitaxial stress. We demonstrate that both compressive and tensile strain decrease this energy at a very similar rate and promote the formation of stable doubly ionized oxygen vacancies. Moreover, we also show that unintentional cationic vacancies introduced under typical growth conditions, produce a characteristic rotation pattern of TiO6 octahedra. The local concentration of oxygen vacancies can be modulated by an electric field with an AFM tip, changing not only the local electrical potential but also producing a nonvolatile mechanical response whose sign (up/down) can be reversed by the electric field. info:eu-repo/grantAgreement/ES/MINECO/MAT2016-80762-R info:eu-repo/semantics/openAccess by-nc http://creativecommons.org/licenses/by-nc/3.0/es/ 1.604 2017 Electronic, Optical and Magnetic Materials 2017 Q1 Condensed Matter Physics 2017 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Sarantopoulos, A. (orcid)0000-0002-6761-6171 Magén, C. Universidad de Zaragoza Rivadulla, F. 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 95, 16 (2017), 165138 [7 pp] Phys. Rev. B, Condens. matter mater. phys. Physical Review B. Condensed Matter and Materials Physics 1098-0121 1051468 http://zaguan.unizar.es/record/70690/files/texto_completo.pdf Versión publicada 135335 http://zaguan.unizar.es/record/70690/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:70690 articulos driver 2019-07-09-11:32:45 ARTICLE