2008/08/31 by Chao‐Yang Lu, C. Lü, U. Zülicke +1
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.78.165321
published as Phys. Rev. B 78, 165321 (2008) · 10 pages, 7 figures, Phys. Rev. B 78, 2008, in press
arxiv created 2008/10/01 · openalex publication_date 2008/10/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We investigate the spin relaxation of p-type GaAs quantum wires by numerically solving the fully microscopic kinetic spin Bloch equations. We find that the quantum-wire size influences the spin-relaxation time effectively by modulating the energy spectrum and the heavy-hole--light-hole mixing of wire states. The effects of quantum-wire size, temperature, hole density, and initial polarization are investigated in detail. We show that, depending on the situation, the spin-relaxation time can either increase or decrease with hole density. Due to the different subband structure and effects arising from spin-orbit coupling, many spin-relaxation properties are quite different from those of holes in the bulk or in quantum wells, and the intersubband scattering makes a marked contribution to the spin relaxation.