Contact-Free Mapping of Electronic Transport Phenomena of Polar Domains in SrMnO3 Films

Schaab, J. ; Krug, I.P. ; Doganay, H. ; Hackl, J. ; Gottlob, D.M. ; Khan, M.I. ; Nemsak, S. ; Maurel, L. (Universidad de Zaragoza) ; Langenberg, E. ; Algarabel, P.A. (Universidad de Zaragoza) ; Pardo, J.A. (Universidad de Zaragoza) ; Schneider, C.M. ; Meier, D.

Resumen: High-resolution mapping of electronic transport phenomena plays an increasingly important role for the characterization of ferroic domains and their functionality. At present, spatially resolved electronic transport data are commonly gained from local two-point measurements, collected in line-by-line scans with a conducting nanosized probe. Here, we introduce an innovative experimental approach based on low- energy electron microscopy. As a model case, we study polar domains of varying conductance in strained SrMnO3. By a direct comparison with conductive atomic force and electrostatic force microscopy, we reveal that the applied low-energy electron-microscopy experiment can be considered as an inverse IðVÞ measurement, providing access to the local electronic conductance with nanoscale resolution and short data-acquisition times in the order of 10–102 ms. Low-energy electrons thus hold yet unexplored application opportunities as a minimal-invasive probe for local electronic transport phenomena, opening a promising route towards spatially resolved, high-throughput sampling at the nanoscale.

Idioma: Inglés

DOI: 10.1103/PhysRevApplied.5.054009

Año: 2016

Publicado en: Physical review applied 5 (2016), 054009 [7 pp.]
ISSN: 2331-7019

Factor impacto JCR: 4.808 (2016)

Categ. JCR: PHYSICS, APPLIED rank: 21 / 147 = 0.143 (2016) - Q1 - T1

Factor impacto SCIMAGO: 2.448 - Physics and Astronomy (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E26-304043
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2014-51982-C2

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)
Área (Departamento): Área Cienc.Mater. Ingen.Metal. (Dpto. Ciencia Tecnol.Mater.Fl.)