Insulating-layer formation of metallic LaNiO3 on Nb-doped SrTiO3 substrate

Hyang Keun Yoo; Young Jun Chang; Luca Moreschini; Hyeong Do Kim; Chang Hee Sohn; Soobin Sinn; Ji Seop Oh; Cheng Tai Kuo; Aaron Bostwick; Eli Rotenberg; Tae Won Noh

doi:10.1063/1.4916225

Insulating-layer formation of metallic LaNiO₃ on Nb-doped SrTiO₃ substrate

Hyang Keun Yoo, Young Jun Chang, Luca Moreschini, Hyeong Do Kim, Chang Hee Sohn, Soobin Sinn, Ji Seop Oh, Cheng Tai Kuo, Aaron Bostwick, Eli Rotenberg, Tae Won Noh

Department of Physics

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

10 Scopus citations

Abstract

We investigated the electronic structures of strongly correlated metallic LaNiO₃ (LNO) and semiconducting Nb-doped SrTiO₃ (Nb:STO) heterostructures by varying the LNO film thickness using in situ photoemission spectroscopy. We found that, contrary to other interfaces with SrTiO₃ and LaAlO₃, insulating LNO layers are formed between metallic LNO layers and Nb:STO. Such behavior seems to be related with an electron transfer from Nb:STO to LNO due to Schottky-barrier formation at the interface.

Original language	English
Article number	121601
Journal	Applied Physics Letters
Volume	106
Issue number	12
DOIs	https://doi.org/10.1063/1.4916225
State	Published - 23 Mar 2015

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title = "Insulating-layer formation of metallic LaNiO3 on Nb-doped SrTiO3 substrate",

abstract = "We investigated the electronic structures of strongly correlated metallic LaNiO3 (LNO) and semiconducting Nb-doped SrTiO3 (Nb:STO) heterostructures by varying the LNO film thickness using in situ photoemission spectroscopy. We found that, contrary to other interfaces with SrTiO3 and LaAlO3, insulating LNO layers are formed between metallic LNO layers and Nb:STO. Such behavior seems to be related with an electron transfer from Nb:STO to LNO due to Schottky-barrier formation at the interface.",

author = "Yoo, {Hyang Keun} and Chang, {Young Jun} and Luca Moreschini and Kim, {Hyeong Do} and Sohn, {Chang Hee} and Soobin Sinn and Oh, {Ji Seop} and Kuo, {Cheng Tai} and Aaron Bostwick and Eli Rotenberg and Noh, {Tae Won}",

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doi = "10.1063/1.4916225",

language = "English",

volume = "106",

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TY - JOUR

T1 - Insulating-layer formation of metallic LaNiO3 on Nb-doped SrTiO3 substrate

AU - Yoo, Hyang Keun

AU - Chang, Young Jun

AU - Moreschini, Luca

AU - Kim, Hyeong Do

AU - Sohn, Chang Hee

AU - Sinn, Soobin

AU - Oh, Ji Seop

AU - Kuo, Cheng Tai

AU - Bostwick, Aaron

AU - Rotenberg, Eli

AU - Noh, Tae Won

PY - 2015/3/23

Y1 - 2015/3/23

N2 - We investigated the electronic structures of strongly correlated metallic LaNiO3 (LNO) and semiconducting Nb-doped SrTiO3 (Nb:STO) heterostructures by varying the LNO film thickness using in situ photoemission spectroscopy. We found that, contrary to other interfaces with SrTiO3 and LaAlO3, insulating LNO layers are formed between metallic LNO layers and Nb:STO. Such behavior seems to be related with an electron transfer from Nb:STO to LNO due to Schottky-barrier formation at the interface.

AB - We investigated the electronic structures of strongly correlated metallic LaNiO3 (LNO) and semiconducting Nb-doped SrTiO3 (Nb:STO) heterostructures by varying the LNO film thickness using in situ photoemission spectroscopy. We found that, contrary to other interfaces with SrTiO3 and LaAlO3, insulating LNO layers are formed between metallic LNO layers and Nb:STO. Such behavior seems to be related with an electron transfer from Nb:STO to LNO due to Schottky-barrier formation at the interface.

UR - http://www.scopus.com/inward/record.url?scp=84925743125&partnerID=8YFLogxK

U2 - 10.1063/1.4916225

DO - 10.1063/1.4916225

M3 - Article

AN - SCOPUS:84925743125

SN - 0003-6951

VL - 106

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 12

M1 - 121601

ER -

Insulating-layer formation of metallic LaNiO₃ on Nb-doped SrTiO₃ substrate

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