Electronic charge and spin density distribution in a quantum ring with spin-orbit and Coulomb interactions

Csaba Daday, Andrei Manolescu, D. C. Marinescu, and Vidar Gudmundsson
Phys. Rev. B 84, 115311 – Published 20 September 2011

Abstract

Charge and spin density distributions are studied within a nanoring structure endowed with Rashba and Dresselhaus spin-orbit interactions (SOIs). For a small number of electrons, in the presence of an external magnetic field and of the Coulomb interaction, the energy spectrum of the system is calculated through an exact numerical diagonalization procedure. The eigenstates thus determined are used to estimate the charge and spin densities around the ring. We find that when more than two electrons are considered, the charge density deformations induced by SOIs are dramatically flattened by the Coulomb repulsion, while the spin density deformations are amplified.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 18 June 2011

DOI:https://doi.org/10.1103/PhysRevB.84.115311

©2011 American Physical Society

Authors & Affiliations

Csaba Daday1,2, Andrei Manolescu1, D. C. Marinescu3, and Vidar Gudmundsson2

  • 1School of Science and Engineering, Reykjavik University, Menntavegur 1, IS-101 Reykjavik, Iceland
  • 2Science Institute, University of Iceland, Dunhaga 3, IS-107 Reykjavik, Iceland
  • 3Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29621, USA

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 84, Iss. 11 — 15 September 2011

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×