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Title: Signatures of enhanced ordering temperatures in digital superlattices of (LaMnO{sub 3}){sub m}/(SrMnO{sub 3}){sub 2m}.

Abstract

Digital superlattices of (LaMnO{sub 3}{sub m}/SrMnO{sub 3}){sub 2m} (m{<=}3) having the same nominal composition as La{sub 1/3}Sr{sub 2/3}MnO{sub 3}, an antiferromagnetic insulator, have been synthesized by means of molecular beam epitaxy. All superlattices show a sharp resistive maximum at temperatures near to or higher than the Neel temperature of bulk La{sub 1/3}Sr{sub 2/3}MnO{sub 3}. No discernible signatures of magnetic ordering are observed near the resistivity peak for m{<=}2, but m=3 has a susceptibility peak consistent with antiferromagnet ordering, which is canted when cooled in a small magnetic field. Analogies are drawn to d{sub x2-y2} orbitally ordered, layered antiferromagnetic manganites to explain the observations.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
915020
Report Number(s):
ANL/MSD/JA-59627
Journal ID: ISSN 0003-6951; APPLAB; TRN: US200817%%208
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Appl. Phys. Lett.; Journal Volume: 90; Journal Issue: 05/31/2007
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; MAGNETIC FIELDS; MOLECULAR BEAM EPITAXY; NEEL TEMPERATURE; SUPERLATTICES

Citation Formats

Bhattacharya, A., Zhai, X., Warusawithana, M., Eckstein, J. N., Bader, S. D., and Univ. of Illinois. Signatures of enhanced ordering temperatures in digital superlattices of (LaMnO{sub 3}){sub m}/(SrMnO{sub 3}){sub 2m}.. United States: N. p., 2007. Web. doi:10.1063/1.2745205.
Bhattacharya, A., Zhai, X., Warusawithana, M., Eckstein, J. N., Bader, S. D., & Univ. of Illinois. Signatures of enhanced ordering temperatures in digital superlattices of (LaMnO{sub 3}){sub m}/(SrMnO{sub 3}){sub 2m}.. United States. doi:10.1063/1.2745205.
Bhattacharya, A., Zhai, X., Warusawithana, M., Eckstein, J. N., Bader, S. D., and Univ. of Illinois. Thu . "Signatures of enhanced ordering temperatures in digital superlattices of (LaMnO{sub 3}){sub m}/(SrMnO{sub 3}){sub 2m}.". United States. doi:10.1063/1.2745205.
@article{osti_915020,
title = {Signatures of enhanced ordering temperatures in digital superlattices of (LaMnO{sub 3}){sub m}/(SrMnO{sub 3}){sub 2m}.},
author = {Bhattacharya, A. and Zhai, X. and Warusawithana, M. and Eckstein, J. N. and Bader, S. D. and Univ. of Illinois},
abstractNote = {Digital superlattices of (LaMnO{sub 3}{sub m}/SrMnO{sub 3}){sub 2m} (m{<=}3) having the same nominal composition as La{sub 1/3}Sr{sub 2/3}MnO{sub 3}, an antiferromagnetic insulator, have been synthesized by means of molecular beam epitaxy. All superlattices show a sharp resistive maximum at temperatures near to or higher than the Neel temperature of bulk La{sub 1/3}Sr{sub 2/3}MnO{sub 3}. No discernible signatures of magnetic ordering are observed near the resistivity peak for m{<=}2, but m=3 has a susceptibility peak consistent with antiferromagnet ordering, which is canted when cooled in a small magnetic field. Analogies are drawn to d{sub x2-y2} orbitally ordered, layered antiferromagnetic manganites to explain the observations.},
doi = {10.1063/1.2745205},
journal = {Appl. Phys. Lett.},
number = 05/31/2007,
volume = 90,
place = {United States},
year = {Thu May 31 00:00:00 EDT 2007},
month = {Thu May 31 00:00:00 EDT 2007}
}
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