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. 2017 Feb 20;7:43070. doi: 10.1038/srep43070

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(a) I-V characteristics under different incident light polarization angles. (b) Spatially resolved distribution of photoconductive current under an external bias of 5 V and (c) the PFM in-plane phase signal of the same area. (d) Profile analysis of in-plane PFM amplitude and the current distribution of the same region marked by red in (b) and (c). Here the grounded Pt electrode is parallel to the domain walls.