Finite-size Effects in a Two-Dimensional Electron Gas with Rashba Spin-Orbit Interaction
arXiv:cond-mat/0701451 · doi:10.1103/PhysRevB.75.035325
Abstract
Within the Kubo formalism, we estimate the spin-Hall conductivity in a two-dimensional electron gas with Rashba spin-orbit interaction and study its variation as a function of disorder strength and system size. The numerical algorithm employed in the calculation is based on the direct numerical integration of the time-dependent Schrodinger equation in a spin-dependent variant of the particle source method. We find that the spin-precession length, L_s controlled by the strength of the Rashba coupling, establishes the critical lengthscale that marks the significant reduction of the spin-Hall conductivity in bulk systems. In contrast, the electron mean free path, inversely proportional to the strength of disorder, appears to have only a minor effect.
5 pages, 3 figures
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Cited by in corpus (8)
- Semiclassical theories of the anomalous Hall effect
- What can we learn about the dynamics of transported spins by measuring shot noise in spin-orbit-coupled nanostructures?
- Spin-Hall conductivity of a spin-polarized two-dimensional electron gas with Rashba spin-orbit interaction and magnetic impurities
- Edge-induced spin polarization in two-dimensional electron gas
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- Spin Hall Conductivity on the Anisotropic Triangular Lattice
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