Transport Limitation Induced by Electron-Electron Interaction in Single-Walled Carbon Nanotube Films

Abstract One-dimensional conductors, such as single-walled carbon nanotubes (SWNTs), offer an excellent platform for investigating the dimensionality-related effects. In this work, we demonstrate that the non-Drude behavior observed in the far-infrared spectra of SWNT films is a direct manifestation of electron-electron interactions characteristic of one-dimensional transport. Our results reveal a linear frequency dependence of the electron relaxation rate, in agreement with predictions from Tomonaga-Luttinger theory. Employing a modified microscopic model, we describe the conductivity spectra of SWNT films across the entire optical range and derive the theoretical lower bound for their dc sheet resistance. These findings contribute to a deeper understanding of the physics of one-dimensional materials and offer valuable insights for the development of SWNT-based transparent electrodes.

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Publication Details

Journal
ACS Applied Materials & Interfaces
Published
2026-09-24
DOI
https://doi.org/10.1021/acsami.6c08334
Primary Topic
Carbon Nanotubes in Composites
Type
article
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article

Transport Limitation Induced by Electron-Electron Interaction in Single-Walled Carbon Nanotube Films

D. Seliuta, Esko I. Kauppinen, Andžej Urbanovič, Gintaras Valušis et al.
ACS Applied Materials & Interfaces
Carbon Nanotubes in Composites
article

Transport Limitation Induced by Electron-Electron Interaction in Single-Walled Carbon Nanotube Films

D. Seliuta, Esko I. Kauppinen, Andžej Urbanovič, Gintaras Valušis, Artūras Suchodolskis, Zhenyu Xu, Mikhail V. Shuba, Amir Boag, Skirmantas Keršulis, Giedrius Stalnionis, Irmantas Kašalynas, Justinas Jorudas, Ilja Ignatjev
article en

Abstract

Abstract One-dimensional conductors, such as single-walled carbon nanotubes (SWNTs), offer an excellent platform for investigating the dimensionality-related effects. In this work, we demonstrate that the non-Drude behavior observed in the far-infrared spectra of SWNT films is a direct manifestation of electron-electron interactions characteristic of one-dimensional transport. Our results reveal a linear frequency dependence of the electron relaxation rate, in agreement with predictions from Tomonaga-Luttinger theory. Employing a modified microscopic model, we describe the conductivity spectra of SWNT films across the entire optical range and derive the theoretical lower bound for their dc sheet resistance. These findings contribute to a deeper understanding of the physics of one-dimensional materials and offer valuable insights for the development of SWNT-based transparent electrodes.

ACS Applied Materials & Interfaces
Tel Aviv University (IL), Vilnius Gediminas Technical University (LT), Vilnius University (LT), Center for Physical Sciences and Technology (LT), Aalto University (FI)
Openalex Percentile: Top 25%
Carbon Nanotubes in Composites
DOIOpen Access PDFOpenAlex
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Transport Limitation Induced by Electron-Electron Interaction in Single-Walled Carbon Nanotube Films — D. Seliuta, Esko I. Kauppinen, et al. · ACS Applied Materials & Interfaces (2026) | TGRS Research Map | TGRS