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

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 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 languageEnglish (US)
Article number062402
JournalApplied Physics Letters
Volume100
Issue number6
DOIs
StatePublished - Feb 6 2012

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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