English

Chiral Spin Textures of Strongly Interacting Particles in Quantum Dots

Mesoscale and Nanoscale Physics 2011-03-08 v2 Strongly Correlated Electrons Computational Physics

Abstract

We probe for statistical and Coulomb induced spin textures among the low-lying states of repulsively-interacting particles confined to potentials that are both rotationally and time-reversal invariant. In particular, we focus on two-dimensional quantum dots and employ configuration-interaction techniques to directly compute the correlated many-body eigenstates of the system. We produce spatial maps of the single-particle charge and spin density and verify the annular structure of the charge density and the rotational invariance of the spin field. We further compute two-point spin correlations to determine the correlated structure of a single component of the spin vector field. In addition, we compute three-point spin correlation functions to uncover chiral structures. We present evidence for both chiral and quasi-topological spin textures within energetically degenerate subspaces in the three- and four-particle system.

Keywords

Cite

@article{arxiv.1009.1784,
  title  = {Chiral Spin Textures of Strongly Interacting Particles in Quantum Dots},
  author = {Catherine J. Stevenson and Jordan Kyriakidis},
  journal= {arXiv preprint arXiv:1009.1784},
  year   = {2011}
}

Comments

13 pages, 17 figures, 1 table