Effect of spin on ground-state energy of weak-coupled bound magnetopolaron in asymmetry quantum dot

Abstract

Abstract:

The properties of bound magnetopolaron, which is weakly coupled to LO-phonon in an asymmetric quantum dot (QD) were studied by using Tokuda modified linear combination operator and unitary transformation methods. The expression of the ground-state energy as functions of the transverse and longitudinal confinement lengths and the magnetic field was derived. After a simple numerical calculation, it's found that he ground-state energy of bound magnetopolaron splits into two branches after taking into account the spin influence. The ground-state energy, spin-up(down) splitting energy decrease with increasing the transverse and longitudinal confinement lengths, and it is an increasing function of magnetic field.

Key words: optoelectronics, asymmetric quantum dot, spintronics, weak-coupled, bound magnetopolaron

CLC Number:

O469
O472.3

WANG Xiaowu, XIAO Juan, LI Jianhong，LI Zhixin . Effect of spin on ground-state energy of weak-coupled bound magnetopolaron in asymmetry quantum dot [J]. J4, 2011, 28(4): 483-489.

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