Dependence of negative differential resistance on electronic phase separation in unpatterned manganite films

J. F. Ding; K. X. Jin; Z. Zhang; T. Wu

doi:10.1063/1.3684806

Dependence of negative differential resistance on electronic phase separation in unpatterned manganite films

J. F. Ding, K. X. Jin, Z. Zhang, T. Wu^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

Here, we report that small but well-defined negative differential resistance (NDR) steps can be observed at critical voltages in unpatterned millimeter-scale manganite films of Pr _0.65(Ca _0.75Sr _0.25) _0.35MnO ₃. We systematically investigate the magneto-transport properties of strained thin films grown on LaAlO ₃ and SrTiO ₃ substrates and map out their phase diagrams which show temperature- and magnetic-field-dependent electronic phase separation (EPS). Our data suggest that the onset of NDR only occurs deep within the regions of EPS, underscoring the subtle nature of filamentary transport in manganite thin films with competing phases.

Original language	English (US)
Article number	062402
Journal	Applied Physics Letters
Volume	100
Issue number	6
DOIs	https://doi.org/10.1063/1.3684806
State	Published - Feb 6 2012
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Dependence of negative differential resistance on electronic phase separation in unpatterned manganite films",

abstract = "Here, we report that small but well-defined negative differential resistance (NDR) steps can be observed at critical voltages in unpatterned millimeter-scale manganite films of Pr 0.65(Ca 0.75Sr 0.25) 0.35MnO 3. We systematically investigate the magneto-transport properties of strained thin films grown on LaAlO 3 and SrTiO 3 substrates and map out their phase diagrams which show temperature- and magnetic-field-dependent electronic phase separation (EPS). Our data suggest that the onset of NDR only occurs deep within the regions of EPS, underscoring the subtle nature of filamentary transport in manganite thin films with competing phases.",

author = "Ding, {J. F.} and Jin, {K. X.} and Z. Zhang and T. Wu",

note = "Funding Information: We acknowledge the financial support from the Singapore National Research Foundation. ",

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AU - Ding, J. F.

AU - Jin, K. X.

AU - Zhang, Z.

AU - Wu, T.

N1 - Funding Information: We acknowledge the financial support from the Singapore National Research Foundation.

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Y1 - 2012/2/6

N2 - Here, we report that small but well-defined negative differential resistance (NDR) steps can be observed at critical voltages in unpatterned millimeter-scale manganite films of Pr 0.65(Ca 0.75Sr 0.25) 0.35MnO 3. We systematically investigate the magneto-transport properties of strained thin films grown on LaAlO 3 and SrTiO 3 substrates and map out their phase diagrams which show temperature- and magnetic-field-dependent electronic phase separation (EPS). Our data suggest that the onset of NDR only occurs deep within the regions of EPS, underscoring the subtle nature of filamentary transport in manganite thin films with competing phases.

AB - Here, we report that small but well-defined negative differential resistance (NDR) steps can be observed at critical voltages in unpatterned millimeter-scale manganite films of Pr 0.65(Ca 0.75Sr 0.25) 0.35MnO 3. We systematically investigate the magneto-transport properties of strained thin films grown on LaAlO 3 and SrTiO 3 substrates and map out their phase diagrams which show temperature- and magnetic-field-dependent electronic phase separation (EPS). Our data suggest that the onset of NDR only occurs deep within the regions of EPS, underscoring the subtle nature of filamentary transport in manganite thin films with competing phases.

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Dependence of negative differential resistance on electronic phase separation in unpatterned manganite films

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