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Related Experiment Video

Updated: Jun 27, 2026

Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology
09:20

Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology

Published on: December 7, 2015

Kondo physics in carbon nanotubes.

J Nygård1, D H Cobden, P E Lindelof

  • 1Orsted Laboratory, Niels Bohr Institute, Copenhagen, Denmark.

Nature
|December 1, 2000
PubMed
Summary

Single-walled carbon nanotubes act as quantum dots, revealing the universal Kondo effect in molecular electronics. This research demonstrates new Kondo physics accessible through tunable nanotube devices with metal reservoirs.

Area of Science:

  • Molecular electronics
  • Condensed matter physics
  • Quantum phenomena

Background:

  • Metallic carbon nanotubes function as quantum wires and one-dimensional quantum dots.
  • The Kondo effect, typically observed with magnetic impurities in metals, explains enhanced low-temperature scattering.

Purpose of the Study:

  • To investigate the Kondo effect in electrically contacted single-walled carbon nanotubes.
  • To explore the universality of the Kondo effect in a tunable quantum dot system.
  • To probe new classes of Kondo-like effects using nanotube devices.

Main Methods:

  • Fabrication of single-walled carbon nanotube devices with electrical contacts.
  • Utilizing nanotube quantum dots with three-dimensional gold reservoirs.
  • Measuring low-temperature electrical transport through the nanotube devices.

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Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

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Last Updated: Jun 27, 2026

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09:20

Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology

Published on: December 7, 2015

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07:44

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems

Published on: April 28, 2016

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
08:40

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

Main Results:

  • Demonstrated that carbon nanotube quantum dots serve as powerful probes of Kondo physics.
  • Observed Kondo resonances for large electron numbers (N) approaching the unitary limit.
  • Detected a novel Kondo effect in a magnetic field for even electron numbers (N).

Conclusions:

  • Electrically contacted carbon nanotubes are versatile platforms for studying fundamental physics, including the Kondo effect.
  • The tunability of nanotube quantum dots allows access to new regimes of Kondo physics.
  • This work highlights the universality of the Kondo effect and opens avenues for exploring novel quantum phenomena.