Superconducting diamagnetic fluctuations in ropes of carbon nanotubes

Abstract

We report low-temperature magnetisation measurements on a large number of purified ropes of single wall carbon nanotubes. In spite of a large superparamagnetic contribution due to the small ferromagnetic catalytical particles still present in the sample, at low temperature ($T<0.5K$) and low magnetic field ($H<80Oe$), a diamagnetic signal is detectable. This low temperature diamagnetism can be interpreted as the Meissner effect in ropes of carbon nanotubes which have previously been shown to exhibit superconductivity from transport measurements.

arXiv comment10 pages 3 figures

References in corpus (15)

• Luttinger Liquid Behavior in Carbon Nanotubes
• Effective low-energy theory for correlated carbon nanotubes
• Superconductivity in Ropes of Single-Walled Carbon Nanotubes
• Novel Magnetic Properties of Carbon Nanotubes
• High-Tc superconductivity in entirely end-bonded multi-walled carbon nanotubes
• Non-monotonic field-dependence of the ZFC magnetization peak in some systems of magnetic nanoparticles
• Quantum transport through carbon nanotubes: proximity induced and intrinsic superconductivity
• Wentzel-Bardeen singularity and phase diagram for interacting electrons coupled to acoustic phonons in one dimension
• Acoustic phonon exchange, attractive interactions, and the Wentzel-Bardeen singularity in single-wall nanotubes
• Microscopic model of superconductivity in carbon nanotubes
• On superconductivity in armchair carbon nanotubes
• Superconductivity in carbon nanotube ropes
• Superconductivity in ropes of carbon nanotubes
• Effective low-energy theory of superconductivity in carbon nanotube ropes
• A new experimental procedure for characterizing quantum effects in small magnetic particle systems

Cited by in corpus (3)

• Andreev reflection in bilayer graphene
• Meissner effect in honeycomb arrays of multi-walled carbon nanotubes
• Disorder-induced superconductivity in ropes of carbon nanotubes