Tunneling into a Finite Luttinger Liquid Coupled to Noisy Capacitive Leads

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2019
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Štrkalj, Antonio
Ferguson, Michael S.
Wolf, Tobias M. R.
Levkivskyi, Ivan
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Physical Review Letters. American Physical Society (APS). 2019, 122(12), 126802. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.122.126802
Zusammenfassung

Tunneling spectroscopy of one-dimensional interacting wires can be profoundly sensitive to the boundary conditions of the wire. Here, we analyze the tunneling spectroscopy of a wire coupled to capacitive metallic leads. Strikingly, with increasing many-body interactions in the wire, the impact of the boundary noise becomes more prominent. This interplay allows for a smooth crossover from standard 1D tunneling signatures into a regime where the tunneling is dominated by the fluctuations at the leads. This regime is characterized by an elevated zero-bias tunneling alongside a universal power-law decay at high energies. Furthermore, local tunneling measurements in this regime show a unique spatial dependence that marks the formation of plasmonic standing waves in the wire. Our result offers a tunable method by which to control the boundary effects and measure the interaction strength (Luttinger parameter) within the wire.

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ISO 690ŠTRKALJ, Antonio, Michael S. FERGUSON, Tobias M. R. WOLF, Ivan LEVKIVSKYI, Oded ZILBERBERG, 2019. Tunneling into a Finite Luttinger Liquid Coupled to Noisy Capacitive Leads. In: Physical Review Letters. American Physical Society (APS). 2019, 122(12), 126802. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.122.126802
BibTex
@article{Strkalj2019-03-29Tunne-54943,
  year={2019},
  doi={10.1103/PhysRevLett.122.126802},
  title={Tunneling into a Finite Luttinger Liquid Coupled to Noisy Capacitive Leads},
  number={12},
  volume={122},
  issn={0031-9007},
  journal={Physical Review Letters},
  author={Štrkalj, Antonio and Ferguson, Michael S. and Wolf, Tobias M. R. and Levkivskyi, Ivan and Zilberberg, Oded},
  note={Article Number: 126802}
}
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