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(Color online) Comparison of curves of LCMO before and after current processing. The insets show the temperature dependent resistance before and after the processing (left-top), the schematic layout of our samples (left-bottom), and the phase examination of XRD pattern of LCMO/STO (right-bottom).
(Color online) curves of LCMO at different temperatures after the current processing. The insets show the detailed characters of the transport behaviors.
(Color online) Alternant tuning of curves under negative voltage pulse and positive constant current excitations in three different cycles. The open symbol stands for the curve of the as-induced state at . Inset: (a) the effect of duration of the negative voltage pulse on the tuning; (b) the tuning result of the different voltage pulses.
(Color online) Sketch of the valence band bending at a grain boundary after large current processing. Part of the valence band is shown. Band shift under a positive bias voltage (a) and a negative bias voltage (b).
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