Wigner oscillations in strongly correlated carbon nanotube quantum dots

The competition between Friedel and Wigner oscillations in the density of strongly interacting carbon nanotubes is inspected within the Luttinger liquid picture. The power laws of the low temperature density oscillations are different from the usual case of quantum dots defined in quantum wires. Tem...

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Bibliographic Details
Published in:European physical journal plus 2014-05, Vol.129 (5), p.87, Article 87
Main Authors: Traverso Ziani, N., Dolcetto, G., Cavaliere, F., Sassetti, M.
Format: Article
Language:English
Subjects:
Applied and Technical Physics
Atomic
Carbon nanotubes
Complex Systems
Condensed Matter Physics
Density
Focus Point on Quantum Spintronics and Related Phenomena
Low temperature
Mathematical and Computational Physics
Molecular
Nanotechnology
Optical and Plasma Physics
Oscillations
Physics
Physics and Astronomy
Quantum dots
Quantum wires
Regular Article
Theoretical
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Summary:The competition between Friedel and Wigner oscillations in the density of strongly interacting carbon nanotubes is inspected within the Luttinger liquid picture. The power laws of the low temperature density oscillations are different from the usual case of quantum dots defined in quantum wires. Temperature plays an important role in the visibility of Wigner oscillations: both Friedel and Wigner oscillations are suppressed, but Friedel oscillations are suppressed at much lower temperature, signalling the incipience of spin-incoherent Luttinger liquid state.
ISSN:2190-5444
2190-5444
DOI:10.1140/epjp/i2014-14087-1