Phonon modulation of the spin-orbit interaction as a spin relaxation mechanism in InSb quantum dots

2008/01/13 by A. M. Alcalde, C. L. Romano, Alcalde, A. M. +5
Engineering · Physics and Astronomy · #Advanced Research in Systems and Signal Processing #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall

paper · pdf · doi:10.48550/arxiv.0801.1952

5 page, 2 figures, accepted in Phonons 2007 proceedings

arxiv created 2008/01/13 · openalex publication_date 2008/01/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We calculate the spin relaxation rates in a parabolic InSb quantum dots due to the spin interaction with acoustical phonons. We considered the deformation potential mechanism as the dominant electron-phonon coupling in the Pavlov-Firsov spin-phonon Hamiltonian. By studying suitable choices of magnetic field and lateral dot size, we determine regions where the spin relaxation rates can be practically suppressed. We analyze the behavior of the spin relaxation rates as a function of an external magnetic field and mean quantum dot radius. Effects of the spin admixture due to Dresselhaus contribution to spin-orbit interaction are also discussed.

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