[3B01-11] Low-dimensional Material / Nanostructure / Nanomaterial (LD/NS/NM))

11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)

[3B07] Intrinsic current noise due to phonon scattering in carbon nanotubes

*Aina Sumiyoshi¹, Takahiro Yamamoto¹ (1. Tokyo University of Science (Japan))

Carbon nanotubes (CNTs) are promising materials for nanoelectronics, owing to their exceptional electronic transport properties. In nanoscale materials, current noise and quantum effects become pronounced and can strongly affect device characteristics. While current noise has emerged as a hindrance for device performance, it also encompasses significant material information.In this presentation, we theoretically investigate the probability distribution function (PDF) of the current in CNTs arising from electron-phonon scattering and evaluate the mean, variance, skewness, and kurtosis, using an atomistic simulation method based on the Open Time-Dependent Schrödinger Equation + Molecular Dynamics method. We found that the current PDF gradually changes from a Gaussian distribution to a non-Gaussian distribution as the CNT length increases. We also demonstrate that a stochastic model can capture the evolution of the current PDF across the ballistic-to-diffusive crossover.

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