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@ARTICLE{Kmpfer:1039743,
      author       = {Kämpfer, David and Kovalchuk, Serhii and Hofmann, Jonathan
                      K. and Balashov, Timofey and Cherepanov, Vasily and
                      Voigtländer, Bert and Morawski, Ireneusz and Tautz, F.
                      Stefan and Lüpke, Felix},
      title        = {{I}maging the transition from diffusive to {L}andauer
                      resistivity dipoles},
      reportid     = {FZJ-2025-01782, arXiv:2412.15817},
      year         = {2024},
      abstract     = {A point-like defect in a uniform current-carrying conductor
                      induces a dipole in the electrochemical potential, which
                      counteracts the original transport field. If the mean free
                      path of the carriers is much smaller than the size of the
                      defect, the dipole results from the purely diffusive motion
                      of the carriers around the defect. In the opposite limit,
                      ballistic carriers scatter from the defect $-$ for this
                      situation Rolf Landauer postulated the emergence of a
                      residual resistivity dipole (RRD) that is independent of the
                      defect size and thus imposes a fundamental limit on the
                      resistance of the parent conductor in the presence of
                      defects. Here, we study resistivity dipoles around holes of
                      different sizes in two-dimensional Bi films on Si(111).
                      Using scanning tunneling potentiometry to image the dipoles
                      in real space, we find a transition from linear to constant
                      scaling behavior for small hole sizes, manifesting the
                      transition from diffusive to Landauer dipoles. The extracted
                      parameters of the transition allow us to estimate the Fermi
                      wave vector and the carrier mean free path in our Bi films.},
      cin          = {PGI-3},
      cid          = {I:(DE-Juel1)PGI-3-20110106},
      pnm          = {5213 - Quantum Nanoscience (POF4-521)},
      pid          = {G:(DE-HGF)POF4-5213},
      typ          = {PUB:(DE-HGF)25},
      eprint       = {2412.15817},
      howpublished = {arXiv:2412.15817},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2412.15817;\%\%$},
      url          = {https://juser.fz-juelich.de/record/1039743},
}