Print Email Facebook Twitter Auger-spectroscopy in quantum Hall edge channels and the missing energy problem Title Auger-spectroscopy in quantum Hall edge channels and the missing energy problem Author Krähenmann, T.S. (TU Delft QCD/Vandersypen Lab; TU Delft QuTech Advanced Research Centre; ETH Zürich; Kavli institute of nanoscience Delft) Fischer, S. G. (Weizmann Institute of Science; Ben-Gurion University of the Negev) Röösli, M. (ETH Zürich) Ihn, T. (ETH Zürich) Reichl, C. (ETH Zürich) Wegscheider, W. (ETH Zürich) Ensslin, K. (ETH Zürich) Gefen, Y. (Weizmann Institute of Science) Meir, Yigal (Ben-Gurion University of the Negev) Date 2019 Abstract Quantum Hall edge channels offer an efficient and controllable platform to study quantum transport in one dimension. Such channels are a prospective tool for the efficient transfer of quantum information at the nanoscale, and play a vital role in exposing intriguing physics. Electric current along the edge carries energy and heat leading to inelastic scattering, which may impede coherent transport. Several experiments attempting to probe the concomitant energy redistribution along the edge reported energy loss via unknown mechanisms of inelastic scattering. Here we employ quantum dots to inject and extract electrons at specific energies, to spectrally analyse inelastic scattering inside quantum Hall edge channels. We show that the missing energy puzzle could be untangled by incorporating non-local Auger-like processes, in which energy is redistributed between spatially separate parts of the sample. Our theoretical analysis, accounting for the experimental results, challenges common-wisdom analyses which ignore such non-local decay channels. To reference this document use: http://resolver.tudelft.nl/uuid:99662e06-6419-4052-936f-33727813b8b3 DOI https://doi.org/10.1038/s41467-019-11888-1 ISSN 2041-1723 Source Nature Communications, 10 (1) Part of collection Institutional Repository Document type journal article Rights © 2019 T.S. Krähenmann, S. G. Fischer, M. Röösli, T. Ihn, C. Reichl, W. Wegscheider, K. Ensslin, Y. Gefen, Yigal Meir Files PDF s41467_019_11888_1.pdf 1.66 MB Close viewer /islandora/object/uuid:99662e06-6419-4052-936f-33727813b8b3/datastream/OBJ/view