Hot electron transport in a strongly correlated transition-metal oxide

Kumari Gaurav Rana; Takeaki Yajima; Subir Parui; Alexander F. Kemper; Thomas P. Devereaux; Yasuyuki Hikita; Harold Y. Hwang; Tamalika Banerjee

doi:10.1038/srep01274

Hot electron transport in a strongly correlated transition-metal oxide

Kumari Gaurav Rana, Takeaki Yajima, Subir Parui, Alexander F. Kemper, Thomas P. Devereaux, Yasuyuki Hikita, Harold Y. Hwang, Tamalika Banerjee

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

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.

Original language	English
Article number	1274
Journal	Scientific reports
Volume	3
DOIs	https://doi.org/10.1038/srep01274
Publication status	Published - 2013
Externally published	Yes

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10.1038/srep01274

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@article{2acf31c358134fad8613edc66664ac31,

title = "Hot electron transport in a strongly correlated transition-metal oxide",

abstract = "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.",

author = "Rana, {Kumari Gaurav} and Takeaki Yajima and Subir Parui and Kemper, {Alexander F.} and Devereaux, {Thomas P.} and Yasuyuki Hikita and Hwang, {Harold Y.} and Tamalika Banerjee",

note = "Funding Information: We acknowledge financial support from the NWO-VIDI program and the NanoNed program coordinated by the Dutch Ministry of Economic Affairs (K.G.R., S.P. & T.B.) and thank R. Ruiter for help with an illustration. We acknowledge support from the Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, under contract DE-AC02-76SF00515 (T.Y., A.F.K., T.P.D., Y.H. & H.Y.H.). T.Y. also acknowledges support from the Japan Society for the Promotion of Science (JSPS).",

year = "2013",

doi = "10.1038/srep01274",

language = "English",

volume = "3",

journal = "Scientific Reports",

issn = "2045-2322",

publisher = "Nature Publishing Group",

}

TY - JOUR

T1 - Hot electron transport in a strongly correlated transition-metal oxide

AU - Rana, Kumari Gaurav

AU - Yajima, Takeaki

AU - Parui, Subir

AU - Kemper, Alexander F.

AU - Devereaux, Thomas P.

AU - Hikita, Yasuyuki

AU - Hwang, Harold Y.

AU - Banerjee, Tamalika

N1 - Funding Information: We acknowledge financial support from the NWO-VIDI program and the NanoNed program coordinated by the Dutch Ministry of Economic Affairs (K.G.R., S.P. & T.B.) and thank R. Ruiter for help with an illustration. We acknowledge support from the Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, under contract DE-AC02-76SF00515 (T.Y., A.F.K., T.P.D., Y.H. & H.Y.H.). T.Y. also acknowledges support from the Japan Society for the Promotion of Science (JSPS).

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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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JO - Scientific Reports

JF - Scientific Reports

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Hot electron transport in a strongly correlated transition-metal oxide

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