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Coulomb Interaction in Finite-Width Quantum Rings

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Physics of Quantum Rings

Part of the book series: NanoScience and Technology ((NANO))

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Abstract

Due to the particular confinement and reduced dimensionality of quantum rings, Coulomb interaction plays an important role for their electronic structure. In this chapter, we discuss the dependency of the ground state of an idealized quantum ring contained a small number of interacting electrons on geometric parameters like ring radius, radial confinement and eccentricity. The ring geometry affects both the charge distribution and the spin configuration in a quantum ring. Numerically exact results obtained from path-integral quantum Monte Carlo demonstrate the strong connection between the structure and the total spin of the ground state emerging from the interplay between confinement and Coulomb interaction.

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Author information

Authors and Affiliations

  1. I. Institute for Theoretical Physics, University of Hamburg, Jungiusstr. 9, 20355, Hamburg, Germany

    Benjamin Baxevanis & Daniela Pfannkuche

Authors
  1. Benjamin Baxevanis
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  2. Daniela Pfannkuche
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Corresponding author

Correspondence to Benjamin Baxevanis .

Editor information

Editors and Affiliations

  1. Institute for Integrative Nanosciences Institute for Integrative Nanosciences, Leibniz Institute for Solid State and Ma, Dresden, Germany

    Vladimir M. Fomin

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Baxevanis, B., Pfannkuche, D. (2014). Coulomb Interaction in Finite-Width Quantum Rings. In: Fomin, V. (eds) Physics of Quantum Rings. NanoScience and Technology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-39197-2_15

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