2012Diwen wuli xuebaoRequires access

TEMPERATURE EFFECT OF STRONG-COUPLINGBOUND POLARON IN QUANTUM RODS

Wang Xiu

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Abstract

We study the temperature effect on the vibrational frequency and the ground state binding energy of a strong-coupling bound polaron in the quantum rods.The vibrational frequency and the ground state binding energy are expressed as a functions of the aspect ratio of the ellipsoid,the bound energy,the transverse effective confinement lengths,the temperature and the electron-phonon coupling strength by using a linear combination operator and unitary transformation methods.It is found that the vibrational frequency and the ground state binding energy are increasing functions of the the bound energy but become decreasing ones of the temperature and aspect ratio.

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We study the temperature effect on the vibrational frequency and the ground state binding energy of a strong-coupling bound polaron in the quantum rods.The vibrational frequency and the ground state binding energy are expressed as a functions of the aspect ratio of the ellipsoid,the bound energy,the transverse effective confinement lengths,the temperature and the electron-phonon coupling strength by using a linear combination operator and unitary transformation methods.It is found that the vibrational frequency and the ground state binding energy are increasing functions of the the bound energy but become decreasing ones of the temperature and aspect ratio.

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Available abstract

We study the temperature effect on the vibrational frequency and the ground state binding energy of a strong-coupling bound polaron in the quantum rods.The vibrational frequency and the ground state binding energy are expressed as a functions of the aspect ratio of the ellipsoid,the bound energy,the transverse effective confinement lengths,the temperature and the electron-phonon coupling strength by using a linear combination operator and unitary transformation methods.It is found that the vibrational frequency and the ground state binding energy are increasing functions of the the bound energy but become decreasing ones of the temperature and aspect ratio.

Key concepts: Unitary transformation, Polaron, Ground state, Binding energy, Phonon, Molecular vibration, Quantum, Physics

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