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Interaction-induced strong localization in quantum dots

Publication ,  Journal Article
Güçlü, AD; Ghosal, A; Umrigar, CJ; Baranger, HU
Published in: Physical Review B - Condensed Matter and Materials Physics
January 2, 2008

We argue that Coulomb blockade phenomena are a useful probe of the crossover to strong correlation in quantum dots. Through calculations at low density using variational and diffusion quantum Monte Carlo (up to rs ∼55), we find that the addition energy shows a clear progression from features associated with shell structure to those caused by commensurability of a Wigner crystal. This crossover (which occurs near rs ∼20 for spin-polarized electrons) is, then, a signature of interaction-driven localization. As the addition energy is directly measurable in Coulomb blockade conductance experiments, this provides a direct probe of localization in the low density electron gas. © 2008 The American Physical Society.

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Published In

Physical Review B - Condensed Matter and Materials Physics

DOI

EISSN

1550-235X

ISSN

1098-0121

Publication Date

January 2, 2008

Volume

77

Issue

4

Related Subject Headings

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

Citation

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Güçlü, A. D., Ghosal, A., Umrigar, C. J., & Baranger, H. U. (2008). Interaction-induced strong localization in quantum dots. Physical Review B - Condensed Matter and Materials Physics, 77(4). https://doi.org/10.1103/PhysRevB.77.041301
Güçlü, A. D., A. Ghosal, C. J. Umrigar, and H. U. Baranger. “Interaction-induced strong localization in quantum dots.” Physical Review B - Condensed Matter and Materials Physics 77, no. 4 (January 2, 2008). https://doi.org/10.1103/PhysRevB.77.041301.
Güçlü AD, Ghosal A, Umrigar CJ, Baranger HU. Interaction-induced strong localization in quantum dots. Physical Review B - Condensed Matter and Materials Physics. 2008 Jan 2;77(4).
Güçlü, A. D., et al. “Interaction-induced strong localization in quantum dots.” Physical Review B - Condensed Matter and Materials Physics, vol. 77, no. 4, Jan. 2008. Scopus, doi:10.1103/PhysRevB.77.041301.
Güçlü AD, Ghosal A, Umrigar CJ, Baranger HU. Interaction-induced strong localization in quantum dots. Physical Review B - Condensed Matter and Materials Physics. 2008 Jan 2;77(4).

Published In

Physical Review B - Condensed Matter and Materials Physics

DOI

EISSN

1550-235X

ISSN

1098-0121

Publication Date

January 2, 2008

Volume

77

Issue

4

Related Subject Headings

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