Temperature Effects on the First Excited State of the Polaron in an Asymmetric Quantum Pseudodot Under Magnetic Field

Using the variational method of the Pekar type, we investigate the first excited state energy of the polaron in an asymmetric quantum pseudodot under the magnetic field. Temperature effects on the polaron are calculated by employing the quantum statistical theory, and the influences of the chemical...

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Bibliographic Details
Published in:Journal of low temperature physics 2019-02, Vol.194 (3-4), p.262-272
Main Authors: Chen, Ying-Jie, Zhang, Pei-Yu
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemical potential
Condensed Matter Physics
Confinement
Coupling
Cyclotron frequency
Cyclotrons
Low temperature physics
Magnetic fields
Magnetic Materials
Magnetism
Organic chemistry
Physics
Physics and Astronomy
Polarons
Quantum statistics
Temperature effects
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Summary:Using the variational method of the Pekar type, we investigate the first excited state energy of the polaron in an asymmetric quantum pseudodot under the magnetic field. Temperature effects on the polaron are calculated by employing the quantum statistical theory, and the influences of the chemical potential, the zero point of pseudo-harmonic potential (PHP), the cyclotron frequency, the electron–phonon coupling strength and the transverse and the longitudinal effective confinement lengths are taken into account. The results show that the first excited state energy decreases (increases) when the temperature is increased at lower (higher) temperature region. And it is an increasing function of the chemical potential, the zero point of PHP, the cyclotron frequency and the electron–phonon coupling strength. Simultaneously, it is a decreasing one of the transverse and the longitudinal effective confinement lengths.
ISSN:0022-2291
1573-7357
DOI:10.1007/s10909-018-2098-6