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SU(2) and SU(4) Kondo effects in carbon nanotube quantum dots

Publication ,  Journal Article
Makarovski, A; Zhukov, A; Liu, J; Finkelstein, G
Published in: Physical Review B - Condensed Matter and Materials Physics
June 25, 2007

We study the SU(4) Kondo effect in carbon nanotube quantum dots, where doubly degenerate orbitals form four-electron "shells." The SU(4) Kondo behavior is investigated for one, two, and three electrons in the topmost shell. While the Kondo state of two electrons is quenched by a magnetic field, in the case of an odd number of electrons two types of SU(2) Kondo effect may survive. Namely, the spin SU(2) state is realized in a magnetic field parallel to the nanotube (inducing primarily orbital splitting). Application of the perpendicular field (inducing Zeeman splitting) results in the orbital SU(2) Kondo effect. © 2007 The American Physical Society.

Duke Scholars

Published In

Physical Review B - Condensed Matter and Materials Physics

DOI

EISSN

1550-235X

ISSN

1098-0121

Publication Date

June 25, 2007

Volume

75

Issue

24

Related Subject Headings

  • Fluids & Plasmas
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences
 

Citation

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Makarovski, A., Zhukov, A., Liu, J., & Finkelstein, G. (2007). SU(2) and SU(4) Kondo effects in carbon nanotube quantum dots. Physical Review B - Condensed Matter and Materials Physics, 75(24). https://doi.org/10.1103/PhysRevB.75.241407
Makarovski, A., A. Zhukov, J. Liu, and G. Finkelstein. “SU(2) and SU(4) Kondo effects in carbon nanotube quantum dots.” Physical Review B - Condensed Matter and Materials Physics 75, no. 24 (June 25, 2007). https://doi.org/10.1103/PhysRevB.75.241407.
Makarovski A, Zhukov A, Liu J, Finkelstein G. SU(2) and SU(4) Kondo effects in carbon nanotube quantum dots. Physical Review B - Condensed Matter and Materials Physics. 2007 Jun 25;75(24).
Makarovski, A., et al. “SU(2) and SU(4) Kondo effects in carbon nanotube quantum dots.” Physical Review B - Condensed Matter and Materials Physics, vol. 75, no. 24, June 2007. Scopus, doi:10.1103/PhysRevB.75.241407.
Makarovski A, Zhukov A, Liu J, Finkelstein G. SU(2) and SU(4) Kondo effects in carbon nanotube quantum dots. Physical Review B - Condensed Matter and Materials Physics. 2007 Jun 25;75(24).

Published In

Physical Review B - Condensed Matter and Materials Physics

DOI

EISSN

1550-235X

ISSN

1098-0121

Publication Date

June 25, 2007

Volume

75

Issue

24

Related Subject Headings

  • Fluids & Plasmas
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences