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

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Title
Insulating-layer formation of metallic LaNiO3 on Nb-doped SrTiO3 substrate
Author(s)
Hyang Keun Yoo; Chang Y.J.; Moreschini L.; Hyeong-Do Kim; Chang Hee Sohn; Soobin Sinn; Ji Seop Oh; Cheng-Tai Kuo; Bostwick A.; Rotenberg E.; Tae Won Noh
Publication Date
2015-03
Journal
APPLIED PHYSICS LETTERS, v.106, no.12, pp.121601 -
Publisher
AMER INST PHYSICS
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. © 2015 AIP Publishing LLC
URI
https://pr.ibs.re.kr/handle/8788114/2087
ISSN
0003-6951
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > Journal Papers (저널논문)
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