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Title: Reentrant Insulating State in Ultrathin Manganite Films

Abstract

The transport and magnetic properties of La{sub 0.7}Sr{sub 0.3}MnO{sub 3} thin-films grown by pulsed laser deposition on (LaAlO{sub 3}){sub 0.3}(SrAl{sub 0.5}Ta{sub 0.5}O{sub 3}){sub 0.7} single crystal substrates have been investigated. A systematic series with various thicknesses of La{sub 0.7}Sr{sub 0.3}MnO{sub 3} was used to establish a phase diagram - which showed a clear difference compared to films grown on SrTiO{sub 3} substrates, highlighting the importance of film thickness and substrate strain. At 8 unit cells, the boundary between the metallic and insulating ground states, a second abrupt metal-insulator transition was observed at low temperatures, which could be tuned with by magnetic field, and is interpreted as a signature of electronic phase separation.

Authors:
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1024166
Report Number(s):
SLAC-PUB-14517
TRN: US201119%%102
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Journal Article
Journal Name:
Submitted to Applied Physics Letters
Additional Journal Information:
Journal Name: Submitted to Applied Physics Letters
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; DEPOSITION; GROUND STATES; LASERS; MAGNETIC FIELDS; MAGNETIC PROPERTIES; MONOCRYSTALS; PHASE DIAGRAMS; SUBSTRATES; THICKNESS; THIN FILMS; TRANSPORT; PHYS

Citation Formats

Bell, Christopher. Reentrant Insulating State in Ultrathin Manganite Films. United States: N. p., 2011. Web.
Bell, Christopher. Reentrant Insulating State in Ultrathin Manganite Films. United States.
Bell, Christopher. Thu . "Reentrant Insulating State in Ultrathin Manganite Films". United States. https://www.osti.gov/servlets/purl/1024166.
@article{osti_1024166,
title = {Reentrant Insulating State in Ultrathin Manganite Films},
author = {Bell, Christopher},
abstractNote = {The transport and magnetic properties of La{sub 0.7}Sr{sub 0.3}MnO{sub 3} thin-films grown by pulsed laser deposition on (LaAlO{sub 3}){sub 0.3}(SrAl{sub 0.5}Ta{sub 0.5}O{sub 3}){sub 0.7} single crystal substrates have been investigated. A systematic series with various thicknesses of La{sub 0.7}Sr{sub 0.3}MnO{sub 3} was used to establish a phase diagram - which showed a clear difference compared to films grown on SrTiO{sub 3} substrates, highlighting the importance of film thickness and substrate strain. At 8 unit cells, the boundary between the metallic and insulating ground states, a second abrupt metal-insulator transition was observed at low temperatures, which could be tuned with by magnetic field, and is interpreted as a signature of electronic phase separation.},
doi = {},
url = {https://www.osti.gov/biblio/1024166}, journal = {Submitted to Applied Physics Letters},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {8}
}