Reentrant insulating state in ultrathin manganite films

Bongju Kim; Daeyoung Kwon; Takeaki Yajima; Christopher Bell; Yasuyuki Hikita; Bog G. Kim; Harold Y. Hwang; Chris Bell

doi:10.1063/1.3628659

Reentrant insulating state in ultrathin manganite films

Bongju Kim, Daeyoung Kwon, Takeaki Yajima, Christopher Bell, Yasuyuki Hikita, Bog G. Kim^*, Harold Y. Hwang, Chris Bell

^*Corresponding author for this work

School of Physics

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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Abstract

The transport and magnetic properties of La(0.7)Sr(0.3)MnO(3) thin-films grown by pulsed laser deposition on (LaAlO(3))(0.3)(SrAl(0.5)Ta(0.5)O(3))(0.7) single crystal substrates have been investigated. A systematic series with various thicknesses of La(0.7)Sr(0.3)MnO(3) was used to establish a phase diagram which showed a clear difference compared to films grown on SrTiO(3) substrates, highlighting the importance of film thickness, and substrate strain. At 8 unit cells, the boundary between the metallic and insulating groundstates, a second abrupt metal-insulator transition was observed at low temperatures, which could be tuned by magnetic field, and was interpreted as a signature of electronic phase separation. (C) 2011 American Institute of Physics. [doi:10.1063/1.3628659]

Original language	English
Article number	092513
Number of pages	3
Journal	Applied Physics Letters
Volume	99
Issue number	9
DOIs	https://doi.org/10.1063/1.3628659
Publication status	Published - 29 Aug 2011

Keywords

PHASE-DIAGRAM
MAGNETORESISTANCE
TEMPERATURE
INTERFACE

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@article{da2a6af48593492d927eb2fea38ae271,

title = "Reentrant insulating state in ultrathin manganite films",

abstract = "The transport and magnetic properties of La(0.7)Sr(0.3)MnO(3) thin-films grown by pulsed laser deposition on (LaAlO(3))(0.3)(SrAl(0.5)Ta(0.5)O(3))(0.7) single crystal substrates have been investigated. A systematic series with various thicknesses of La(0.7)Sr(0.3)MnO(3) was used to establish a phase diagram which showed a clear difference compared to films grown on SrTiO(3) substrates, highlighting the importance of film thickness, and substrate strain. At 8 unit cells, the boundary between the metallic and insulating groundstates, a second abrupt metal-insulator transition was observed at low temperatures, which could be tuned by magnetic field, and was interpreted as a signature of electronic phase separation. (C) 2011 American Institute of Physics. [doi:10.1063/1.3628659]",

keywords = "PHASE-DIAGRAM, MAGNETORESISTANCE, TEMPERATURE, INTERFACE",

author = "Bongju Kim and Daeyoung Kwon and Takeaki Yajima and Christopher Bell and Yasuyuki Hikita and Kim, {Bog G.} and Hwang, {Harold Y.} and Chris Bell",

year = "2011",

month = aug,

day = "29",

doi = "10.1063/1.3628659",

language = "English",

volume = "99",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics (AIP)",

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TY - JOUR

T1 - Reentrant insulating state in ultrathin manganite films

AU - Kim, Bongju

AU - Kwon, Daeyoung

AU - Yajima, Takeaki

AU - Bell, Christopher

AU - Hikita, Yasuyuki

AU - Kim, Bog G.

AU - Hwang, Harold Y.

AU - Bell, Chris

PY - 2011/8/29

Y1 - 2011/8/29

N2 - The transport and magnetic properties of La(0.7)Sr(0.3)MnO(3) thin-films grown by pulsed laser deposition on (LaAlO(3))(0.3)(SrAl(0.5)Ta(0.5)O(3))(0.7) single crystal substrates have been investigated. A systematic series with various thicknesses of La(0.7)Sr(0.3)MnO(3) was used to establish a phase diagram which showed a clear difference compared to films grown on SrTiO(3) substrates, highlighting the importance of film thickness, and substrate strain. At 8 unit cells, the boundary between the metallic and insulating groundstates, a second abrupt metal-insulator transition was observed at low temperatures, which could be tuned by magnetic field, and was interpreted as a signature of electronic phase separation. (C) 2011 American Institute of Physics. [doi:10.1063/1.3628659]

AB - The transport and magnetic properties of La(0.7)Sr(0.3)MnO(3) thin-films grown by pulsed laser deposition on (LaAlO(3))(0.3)(SrAl(0.5)Ta(0.5)O(3))(0.7) single crystal substrates have been investigated. A systematic series with various thicknesses of La(0.7)Sr(0.3)MnO(3) was used to establish a phase diagram which showed a clear difference compared to films grown on SrTiO(3) substrates, highlighting the importance of film thickness, and substrate strain. At 8 unit cells, the boundary between the metallic and insulating groundstates, a second abrupt metal-insulator transition was observed at low temperatures, which could be tuned by magnetic field, and was interpreted as a signature of electronic phase separation. (C) 2011 American Institute of Physics. [doi:10.1063/1.3628659]

KW - PHASE-DIAGRAM

KW - MAGNETORESISTANCE

KW - TEMPERATURE

KW - INTERFACE

U2 - 10.1063/1.3628659

DO - 10.1063/1.3628659

M3 - Article (Academic Journal)

VL - 99

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 9

M1 - 092513

ER -

Reentrant insulating state in ultrathin manganite films

Abstract

Keywords

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