Y.-P. Liu1,2, N. Lamers1, Z. Zhang1, N. Zaiats1, A. Mikkelsen1, J. Wallentin1 R. Dittmann1,2, R. Timm1 1 Department of Physics, Lund University, Lund, Sweden 2 Peter Grünberg Institut (PGI-7), Forschungszentrum Jülich GmbH, Jülich, Germany e-mail: yen.liu@fz-juelich.de; rainer.timm@sljus.lu.se Acknowledgments This work was supported by the Swedish Research Council (grants nos. 2016-6186, 2017-4108, and 2021-5627), by the European Commission, by the Olle Engkvist Foundation, by the NanoLund Center for Nanoscience (2021 seedling project), and by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant 801847). R.D. acknowledges funding by the LTH Lise Meitner program. We acknowledge Elettra Sincrotrone Trieste for providing access to its synchrotron radiation facilities and we thank Matteo Amati and Luca Gregoratti for assistance in using beamline ESCA Microscopy. We further acknowledge support from the staff of the Lund Nano Lab. Original paper Y.-P. Liu et al., ACS Nano, 18, 51, 34763(2024); DOI:10.1021/acsnano.4c11458. Fig. 1 Figure 1. (a) Illustration of the heterojunction perovskite nanowire device (top) and the operando SPEM experiment (bottom); (b) Ohmic behavior of the devices characterized by SPEM in Br 3d core-level; (c) Intensity (highlighting Br concentration) and binding energy shift (indicating bias drop) over the nanowire in the four regions of interest indicated in (b); (d) Reversible redox reaction of Pb 4f between oxidized state Pb2+ and metallic state Pb0 upon biasing. Adapted from Liu et al., ACS Nano 18, 34763-34775 (2024), DOI: 10.1021/acsnano.4c11458, under a Creative Commons BY 4.0 license. Structure and Dynamics Elettra Highlights 2024–2025 77
RkJQdWJsaXNoZXIy MjQ4NzI=