Magnetic field and temperature dependence of the groundstate energy of weak-coupling magnetopolaron in quantum rods with hydrogenic impurity |
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| Authors: | Xiao Xin Wu yun qi mu ge Han Chao and Eerdunchaolu |
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| Affiliation: | Institute of Condensed Matter Physics, Hebei Normal University of Science & Technology, Qinhuangdao 066004,China;College of Physics and Electronic Information, Inner Mongolia University for Nationalities, Tongliao 028043, China;Institute of Condensed Matter Physics, Hebei Normal University of Science & Technology, Qinhuangdao 066004,China;Institute of Condensed Matter Physics, Hebei Normal University of Science & Technology, Qinhuangdao 066004,China |
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| Abstract: | The dependence of the ground-state properties of weak-coupling bound magnetopolarons in quantum rods (QRs) with hydrogenic
impurity on magnetic field and temperature is studied by means of the Lee-Low-Pines (LLP) transformation method and Huybrechts
linear combination operator method. The expression for the ground-state energy of the magnetopolaron is derived. Results of
the numerical calculations show that the ground-state energy of weak-coupling bound magnetopolarons in QRs with hydrogenic
impurity increases with increasing the cyclotron frequency of the magnetic field, the confinement strength of QRs and the
temperature, but decreases with increasing the electron-phonon coupling strength and the dielectric constant ratio. The stability
of the ground state of magnetopolarons is closely related to the aspect ratio e′ of the QR. The ground state of magnetopolarons is the most stable at e′ =1. The stability of the ground state of magnetopolarons can remarkably decrease when the value of the aspect ratio increases
or decreases from 1. |
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