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^*

^*Corresponding author voor dit werk

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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 La0.7Sr0.3MnO3 (LSMO)- Nb-doped SrTiO3 (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.

Originele taal-2	English
Artikelnummer	1274
Aantal pagina's	5
Tijdschrift	Scientific Reports
Volume	3
Nummer van het tijdschrift	11
DOI's	https://doi.org/10.1038/srep01274
Status	Published - 14-feb.-2013

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10.1038/srep01274Licentie: CC BY-NC-ND

Hot electron transport, SupplFinal publisher's version, 177 KBLicentie: CC BY-NC-ND
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@article{190dfb2cf913448db89ecd387618258a,

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 La0.7Sr0.3MnO3 (LSMO)- Nb-doped SrTiO3 (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.",

keywords = "EMISSION MICROSCOPY, ROOM-TEMPERATURE, INTERFACES, SCATTERING",

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",

year = "2013",

month = feb,

day = "14",

doi = "10.1038/srep01274",

language = "English",

volume = "3",

journal = "Scientific Reports",

issn = "2045-2322",

publisher = "Nature Publishing Group",

number = "11",

}

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

PY - 2013/2/14

Y1 - 2013/2/14

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 La0.7Sr0.3MnO3 (LSMO)- Nb-doped SrTiO3 (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 La0.7Sr0.3MnO3 (LSMO)- Nb-doped SrTiO3 (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.

KW - EMISSION MICROSCOPY

KW - ROOM-TEMPERATURE

KW - INTERFACES

KW - SCATTERING

U2 - 10.1038/srep01274

DO - 10.1038/srep01274

M3 - Article

SN - 2045-2322

VL - 3

JO - Scientific Reports

JF - Scientific Reports

IS - 11

M1 - 1274

ER -

Hot electron transport in a strongly correlated transition-metal oxide

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