Two-stage Kondo effect and Kondo-box level spectroscopy in a carbon nanotube
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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.
Published Version (Please cite this version)10.1103/PhysRevB.82.161411
Publication InfoBomze, Y; Borzenets, I; Mebrahtu, H; Makarovski, A; Baranger, HU; & Finkelstein, G (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.
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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
Professor of Physics
Gleb Finkelstein is an experimental physicist interested in inorganic and biologically inspired nanostructures: carbon nanotubes, graphene, and self-assembled DNA 'origami'. These objects reveal a variety of interesting electronic properties that may form a basis for future detectors and sensors, or serve as individual devices in quantum information processing.
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