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Two-stage Kondo effect and Kondo-box level spectroscopy in a carbon nanotube
Abstract
The concept of the "Kondo box" describes a single spin, antiferromagnetically coupled
to a quantum dot with a finite level spacing. Here, a Kondo box is formed in a carbon
nanotube interacting with a localized electron. We investigate the spins of its first
few eigenstates and compare them to a recent theory. In an "open" Kondo-box, strongly
coupled to the leads, we observe a nonmonotonic temperature dependence of the nanotube
conductance, which results from a competition between the Kondo-box singlet and the
"conventional" Kondo state that couples the nanotube to the leads. © 2010 The American
Physical Society.
Type
Journal articlePermalink
https://hdl.handle.net/10161/4257Published Version (Please cite this version)
10.1103/PhysRevB.82.161411Publication Info
(2010). Two-stage Kondo effect and Kondo-box level spectroscopy in a carbon nanotube. Physical Review B - Condensed Matter and Materials Physics, 82(16). pp. 161411. 10.1103/PhysRevB.82.161411. Retrieved from https://hdl.handle.net/10161/4257.This is constructed from limited available data and may be imprecise. To cite this
article, please review & use the official citation provided by the journal.
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Show full item recordScholars@Duke
Harold U. Baranger
Professor of Physics
The broad focus of Prof. Baranger's group is quantum open systems at the nanoscale,
particularly the generation of correlation between particles in such systems. Fundamental
interest in nanophysics-- the physics of small, nanometer scale, bits of solid-- stems
from the ability to control and probe systems on length scales larger than atoms but
small enough that the averaging inherent in bulk properties has not yet occurred.
Using this ability, entirely unanticipated phenomena ca
Gleb Finkelstein
Professor of Physics
Gleb Finkelstein is an experimentalist interested in physics of quantum nanostructures,
such as Josephson junctions and quantum dots made of carbon nanotubes, graphene, and
topological materials. These objects reveal a variety of interesting electronic properties
that may form a basis for future quantum devices.
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