Spin susceptibilities, spin densities, and their connection to spin currents

Sigurdur I. Erlingsson*, John Schliemann, Daniel Loss

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

66 Citations (Scopus)

Abstract

We calculate the frequency-dependent spin susceptibilities for a two-dimensional electron gas with both Rashba and Dresselhaus spin-orbit interactions. The resonances of the susceptibilities depend on the relative values of the Rashba and Dresselhaus spin-orbit constants, which could be manipulated by gate voltages. We derive exact continuity equations, with source terms, for the spin density and use those to connect the spin current to the spin density. In the free electron model the susceptibilities play a central role in the spin dynamics since both the spin density and the spin current are proportional to them.

Original languageEnglish
Article number035319
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume71
Issue number3
DOIs
Publication statusPublished - Jan 2005

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