The Optical Polaron versus the Effective Dimensionality in Quantum Well Systems

Samak, Zher; Saqqa, Bassam

doi:10.35552/anujr.a.24.1.224

An-Najah University Journal for Research - A

2010

DOI: 10.35552/anujr.a.24.1.224

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The Optical Polaron versus the Effective Dimensionality in Quantum Well Systems

Zher Samak¹,

Bassam Saqqa²

Abstract: The confined optical polaron is investigated within the framework of an improved variational technique yielding a unified characterization of problem for all the coupling strengths. The ground state energy is studied as a function of the effective dimensionality of the quantum well to interpolate between all possible confinement geometries. تم دراسة مسألة البلارون الضوئي المحصور باستخدام طريقة معدلة لنظرية LLP بحيث تكون الطريقة صالحة لجميع قيم ثابت الربط بين الإلكترونا… Show more

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Electro-magnetic weak coupling optical polaron and temperature effect in quantum dot

et al. 2015

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We investigate the influence of the electric field and magnetic fields on the ground state energy of a polaron in a spherical semiconductor quantum dot (QD) using the modified Lee Low Pines (LLP) method. The numerical results show the increase of the ground state energy with the increase of the electric field and the electronphonon coupling constant, and the decrease with the magnetic field and the longitudinal confinement length. It is also seen that the temperature is an increasing function of the cyclotron frequency and the coupling constant whereas it decreases with the electric field strength. The modulation of the electric field, the magnetic field and the confinement length leads to the control of decoherence in the system.

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Electro-magnetic weak coupling optical polaron and temperature effect in quantum dot

et al. 2015

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Electric and magnetic optical polaron in quantum dot—Part 1: strong coupling

et al. 2015

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We investigated the influence of electric field and magnetic field on the ground state energy of polaron in spherical semiconductor quantum dot (QD) using a modified Lee Low Pines (LLP) method. The numerical results show the increase of the ground state energy with the increase of the electric field and the decreasing with the magnetic field. The modulation of the electric field, magnetic field and the confinement lengths lead to the control of the decoherence of the system.

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Energy levels of magneto-optical polaron in spherical quantum dot — Part 1: Strong coupling

et al. 2015

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We investigate the influence of a magnetic field on the ground state energy of a polaron in a spherical semiconductor quantum dot (QD) using the modified LLP method. The ground state energy is split into sub-energy levels and there is a degeneracy of energy levels. It is also observed that the degenerate energy increase with the electron–phonon coupling constant and decrease with the magnetic field. The numerical results show that, under the influence of magnetic field and the interaction with the total momentum along the z-direction, the split energy increases and decreases with the longitudinal and the transverse confinement length, respectively.

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The Optical Polaron versus the Effective Dimensionality in Quantum Well Systems

Cited by 5 publications

References 0 publications

Electro-magnetic weak coupling optical polaron and temperature effect in quantum dot

Electro-magnetic weak coupling optical polaron and temperature effect in quantum dot

Electric and magnetic optical polaron in quantum dot—Part 1: strong coupling

Energy levels of magneto-optical polaron in spherical quantum dot — Part 1: Strong coupling

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