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Title: Electronic Reconstruction at SrMnO3-LaMnO3 Superlattice Interfaces

Abstract

We use resonant soft-x-ray scattering (RSXS) to study the electronic reconstruction at the interface between the Mott insulator LaMnO3 and the band insulator SrMnO3. Superlattices of these two insulators were shown previously to have both ferromagnetism and metallic tendencies. By studying a judiciously chosen superlattice reflection, we show that the interface density of states exhibits a pronounced peak at the Fermi level, similar to that predicted in related titanate superlattices by Okamoto et al. The intensity of this peak correlates with the conductivity and magnetization, suggesting it is the driver of metallic behavior. Our study demonstrates a general strategy for using RSXS to probe the electronic properties of heterostructure interfaces.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL) National Synchrotron Light Source
Sponsoring Org.:
Doe - Office Of Science
OSTI Identifier:
959528
Report Number(s):
BNL-82514-2009-JA
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US201016%%672
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 99
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; FERMI LEVEL; FERROMAGNETISM; MAGNETIZATION; REFLECTION; SCATTERING; SUPERLATTICES; TITANATES; national synchrotron light source

Citation Formats

Smadici,S., Abbamonte, P., Bhattacharya, A., Zhai, X., Jiang, B., Rusydi, A., Eckstein, J., Bader, S., and Zuo, J. Electronic Reconstruction at SrMnO3-LaMnO3 Superlattice Interfaces. United States: N. p., 2007. Web. doi:10.1103/PhysRevLett.99.196404.
Smadici,S., Abbamonte, P., Bhattacharya, A., Zhai, X., Jiang, B., Rusydi, A., Eckstein, J., Bader, S., & Zuo, J. Electronic Reconstruction at SrMnO3-LaMnO3 Superlattice Interfaces. United States. doi:10.1103/PhysRevLett.99.196404.
Smadici,S., Abbamonte, P., Bhattacharya, A., Zhai, X., Jiang, B., Rusydi, A., Eckstein, J., Bader, S., and Zuo, J. Mon . "Electronic Reconstruction at SrMnO3-LaMnO3 Superlattice Interfaces". United States. doi:10.1103/PhysRevLett.99.196404.
@article{osti_959528,
title = {Electronic Reconstruction at SrMnO3-LaMnO3 Superlattice Interfaces},
author = {Smadici,S. and Abbamonte, P. and Bhattacharya, A. and Zhai, X. and Jiang, B. and Rusydi, A. and Eckstein, J. and Bader, S. and Zuo, J.},
abstractNote = {We use resonant soft-x-ray scattering (RSXS) to study the electronic reconstruction at the interface between the Mott insulator LaMnO3 and the band insulator SrMnO3. Superlattices of these two insulators were shown previously to have both ferromagnetism and metallic tendencies. By studying a judiciously chosen superlattice reflection, we show that the interface density of states exhibits a pronounced peak at the Fermi level, similar to that predicted in related titanate superlattices by Okamoto et al. The intensity of this peak correlates with the conductivity and magnetization, suggesting it is the driver of metallic behavior. Our study demonstrates a general strategy for using RSXS to probe the electronic properties of heterostructure interfaces.},
doi = {10.1103/PhysRevLett.99.196404},
journal = {Physical Review Letters},
number = ,
volume = 99,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}