Emergent Relativistic Effects in Condensed Matter
From Fundamental Aspects to Electronic Functionality

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27.10.2020

Fabry-Pérot Oscillations in Correlated Carbon Nanotubes


W. Yang, C. Urgell, S. L. De Bonis, M. Margańska, M. Grifoni, A. Bachtold

Physical Review Letters

We report the observation of an intriguing behavior in the transport properties of nanodevices operating in a regime between the Fabry-Pérot and the Kondo limits. Using ultrahigh quality nanotube devices, we study how the conductance oscillates when sweeping the gate voltage. Surprisingly, we observe a fourfold enhancement of the oscillation period upon decreasing temperature, signaling a crossover from single- electron tunneling to Fabry-Pérot interference. These results suggest that the Fabry-Pérot interference occurs in a regime where electrons are correlated. The link between the measured correlated Fabry-Pérot oscillations and the SU(4) Kondo effect is discussed.

 

W. Yang, C. Urgell, S. L. De Bonis, M. Margańska, M. Grifoni, A. Bachtold, Phys. Rev. Lett. 125, 187701(2020)


https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.125.187701

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