Work

Statistical Properties of Current Noise Induced by Electron–Phonon Scattering in Metallic Carbon Nanotubes

Year: 2025

Type: article

Abstract: We theoretically investigate current noise in metallic carbon nanotubes induced by electron-phonon scattering, focusing on the probability density function (PDF) of the current that characterizes the nonequilibrium steady state. Quantum transport simulations combined with analyses of higher-order statistical moments reveal that the PDF evolves continuously from a Gaussian distribution in the ballistic regime to a non-Gaussian gamma distribution in the diffusive regime. In the crossover regime, the PDF exhibits pronounced asymmetry, attributed to a statistical imbalance in the number of conduction pathways contributing to high- and low-current events. Furthermore, in the diffusive regime, we identify non-Markovian features arising from high-frequency resonances in the current noise, which dominate the asymptotic scaling behavior of the current variance.

Source: Journal of the Physical Society of Japan

DOI: 10.7566/jpsj.94.104803

Authors: Aina Sumiyoshi, Keisuke Ishizeki, Takahiro Yamamoto

Institutions: Tokyo University of Science, Research Organization for Information Science and Technology

Language: English

Topic: Quantum and electron transport phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

OpenAlex ID: W7083452914

FWCI:

Cites: 23

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