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Article Dans Une Revue Physical Review B Année : 2023

Minimal alternating current injection into carbon nanotubes

Résumé

We study theoretically the effect of electronic interactions in one-dimensional systems on electron injection using periodic Lorentzian pulses, known as levitons. We consider specifically a system composed of a metallic single-wall carbon nanotube, described with the Luttinger liquid formalism, a scanning tunneling microscope (STM) tip, and metallic leads. Using the out-of-equilibrium Keldysh Green's function formalism, we compute the current and current noise in the system. We prove that the excess noise vanishes when each leviton injects an integer number of electrons from the STM tip into the nanotube. This extends the concept of minimal injection with levitons to strongly correlated, uni-dimensional nonchiral systems. We also study the time-dependent current profile, and show how it is the result of interferences between pulses nontrivially reflected at the nanotube-lead interface.
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hal-04253641 , version 1 (23-10-2023)

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Kota Fukuzawa, Takeo Kato, Thibaut Jonckheere, Jérôme Rech, Thierry Martin. Minimal alternating current injection into carbon nanotubes. Physical Review B, 2023, 108 (12), pp.125307. ⟨10.1103/physrevb.108.125307⟩. ⟨hal-04253641⟩
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