Hot electron transport in a strongly correlated transition-metal oxide

Oxide heterointerfaces are ideal for investigating strong correlation effects to electron transport, relevant for oxide-electronics. Using hot-electrons, we probe electron transport perpendicular to the La(0.7)Sr(0.3)MnO(3) (LSMO)- Nb-doped SrTiO(3) (Nb:STO) interface and find the characteristic hot...

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Detalles Bibliográficos
Autores principales: Rana, Kumari Gaurav, Yajima, Takeaki, Parui, Subir, Kemper, Alexander F., Devereaux, Thomas P., Hikita, Yasuyuki, Hwang, Harold Y., Banerjee, Tamalika
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2013
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3572443/
https://www.ncbi.nlm.nih.gov/pubmed/23429420
http://dx.doi.org/10.1038/srep01274
Descripción
Sumario:Oxide heterointerfaces are ideal for investigating strong correlation effects to electron transport, relevant for oxide-electronics. Using hot-electrons, we probe electron transport perpendicular to the La(0.7)Sr(0.3)MnO(3) (LSMO)- Nb-doped SrTiO(3) (Nb:STO) interface and find the characteristic hot-electron attenuation length in LSMO to be 1.48 ± 0.10 unit cells (u.c.) at −1.9 V, increasing to 2.02 ± 0.16 u.c. at −1.3 V at room temperature. Theoretical analysis of this energy dispersion reveals the dominance of electron-electron and polaron scattering. Direct visualization of the local electron transport shows different transmission at the terraces and at the step-edges.

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