Atomic-scale visualization of electronic fluid flow

@article{Liu2021AtomicscaleVO,
  title={Atomic-scale visualization of electronic fluid flow},
  author={Xiaolong Liu and Yi Xue Chong and Rahul Sharma and J. C. S{\'e}amus Davis},
  journal={Nature Materials},
  year={2021},
  volume={20},
  pages={1480 - 1484}
}
The most essential characteristic of any fluid is the velocity field, and this is particularly true for macroscopic quantum fluids1. Although rapid advances2–7 have occurred in quantum fluid velocity field imaging8, the velocity field of a charged superfluid—a superconductor—has never been visualized. Here we use superconducting-tip scanning tunnelling microscopy9–11 to image the electron-pair density and velocity fields of the flowing electron-pair fluid in superconducting NbSe2. Imaging of… 

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1. LASSP, Department of Physics, Cornell University, Ithaca, NY 14850, USA 2. Department of Physics, University College Cork, Cork T12 R5C, IE 3. Clarendon Laboratory, University of Oxford, Oxford,

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