期刊
MODERN PHYSICS LETTERS B
卷 24, 期 23, 页码 2423-2430出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217984910024791
关键词
Asymmetric quantum dot; spintronics; effective mass; Rashba spin-orbit interaction
In this paper, on the basis of Huybrechs' strong-coupled polaron model, Tokuda modified linear-combination operator and the unitary transformation methods are used to study the properties of the strong-coupled polaron considering the influence of Rashba effect, which is brought by the spin-orbit (SO) interaction, in the asymmetric quantum dot (QD). The expressions of the effective mass as a function of the transverse and longitudinal confinement strengths, the velocity and the vibration frequency were derived. Numerical calculation on the RbCl QD, as an example, is performed and the results show that the total effective mass of the polaron is composed of three parts. The interaction between the orbit and the spin with different directions has different effects on the effective mass of the polaron.
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