RT Journal Article
T1 Oxygen vacancies in strained  SrTiO 3  thin films: Formation enthalpy and manipulation
A1 Iglesias, L.
A1 Sarantopoulos, Alexandros
A1 Magén, Cesar
A1 Rivadulla Fernández, José Francisco
K1 Conductivity
K1 Vacancies
K1 Atomic force microscopy
K1 Condensed Matter
K1 Materials Physics
AB 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
PB APS Physics
SN 2469-9950
YR 2017
FD 2017
LK http://hdl.handle.net/10347/17028
UL http://hdl.handle.net/10347/17028
LA eng
NO Iglesias, L., Sarantopoulos, A., Magén, C., & Rivadulla, F. (2017). Oxygen vacancies in strained SrTiO3 thin films: Formation enthalpy and manipulation. Physical Review B, 95(16). doi: 10.1103/physrevb.95.165138
NO This work was supported the Ministerio de Economía y Competitividad of Spain (Project No. MAT2016-80762-R), and Xunta de Galicia (Centro singular de investigación de Galicia accreditation 2016-2019) and the European Union (European Regional Development Fund - ERDF). L.I. also acknowledges the Ministerio de Economía y Competitividad of Spain for an FPI grant
DS Minerva
RD 26 abr 2026