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

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 Pr0.65(Ca0.75Sr0.25)0.35MnO3. We systematically investigate the magneto-transport properties of strained thin films grown o...

詳細記述

書誌詳細
主要な著者: Ding, J. F., Jin, K. X., Zhang, Z., Tom, Wu
その他の著者: School of Physical and Mathematical Sciences
フォーマット: Journal Article
言語:English
出版事項: 2013
オンライン・アクセス:https://hdl.handle.net/10356/95773
http://hdl.handle.net/10220/9284
その他の書誌記述
要約: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 Pr0.65(Ca0.75Sr0.25)0.35MnO3. We systematically investigate the magneto-transport properties of strained thin films grown on LaAlO3 and SrTiO3 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.