The effects of strong pulsed electric field on the electrical properties of thin epitaxial La_(0.7)Sr_(0.3)MnO_3 films were investigated. The fast electrical switching from high resistance off-state to low resistance on-state was obtained at current densities higher than 10~6 A/cm~2. This current was able to induce an irreversible damage of the sample in the regions at the edges of the electrodes of the film. It was demonstrated that thermal effects are responsible for appearance of delay time and asymmetrical shape of current channel in on-state, however, the fast switching from off- to on-state is a result of electronic effects appearing when critical power is reached in the film.
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机译：研究了强脉冲电场对外延La_（0.7）Sr_（0.3）MnO_3薄膜电学性能的影响。在电流密度高于10〜6 A / cm〜2时，可以实现从高阻态到低阻态的快速电切换。该电流能够在膜的电极边缘的区域中引起样品的不可逆损坏。结果表明，热效应是造成接通时间中延迟时间和电流通道不对称形状的原因，但是，从关断状态快速切换到接通状态是由于在达到临界功率时出现电子效应的结果。电影。
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