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Electronic charge and spin density distribution in a quantum ring with spin-orbit and Coulomb interactions
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Electronic charge and spin density distribution in a quantum ring with spin-orbit and Coulomb interactions
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Electronic charge and spin density distribution in a quantum ring with spin-orbit and Coulomb interactions
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Paper
Electronic charge and spin density distribution in a quantum ring with spin-orbit and Coulomb interactions
2011
Overview
Charge and spin density distributions are studied within a nano-ring structure endowed with Rashba and Dresselhaus spin orbit coupling (SOI). For a small number of interacting electrons, in the presence of an external magnetic field, 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 SOI are dramatically flattened by the Coulomb repulsion, while the spin density ones are amplified.
Publisher
Cornell University Library, arXiv.org
Subject
