Spin relaxation in a GaAs quantum dot embedded inside a suspended phonon cavity

2005/09/30 by Y. Y. Liao, Ying-Yen Liao, Y. N. Chen +4
Engineering · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Condensed matter physics #Magnetic field #Materials science #Phonon #Physics #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Relaxation (psychology) #Semiconductor Quantum Structures and Devices #Slab #Spin (aerodynamics) #Zeeman effect #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.73.085310

5 pages, 4 figures, to apper in Phys. Rev. B (2006)

arxiv created 2006/01/17 · openalex publication_date 2006/02/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The phonon-induced spin relaxation in a two-dimensional quantum dot embedded inside a semiconductor slab is investigated theoretically. An enhanced relaxation rate is found due to the phonon van Hove singularities. Oppositely, a vanishing deformation potential may also result in a suppression of the spin relaxation rate. For larger quantum dots, the interplay between the spin orbit interaction and Zeeman levels causes the suppression of the relaxation at several points. Furthermore, a crossover from confined to bulklike systems is obtained by varying the width of the slab.

Citations

• Spin relaxation and anticrossing in quantum dots: Rashba versus Dresselhaus spin-orbit coupling
• Electronic structure of quantum dots
• Allowed and forbidden transitions in artificial hydrogen and helium atoms
• Spin-Polarized Transport in Inhomogeneous Magnetic Semiconductors: Theory of Magnetic/Nonmagneticp−nJunctions
• Oscillatory effects and the magnetic susceptibility of carriers in inversion layers
• Spin-Orbit Coupling Effects in Zinc Blende Structures
• Zeeman Energy and Spin Relaxation in a One-Electron Quantum Dot
• Spin relaxation in semiconductor quantum dots
• Single-shot read-out of an individual electron spin in a quantum dot