SEMICONDUCTOR PHYSICS

Effects of magnetic field on the polaron in an asymmetrical Gaussian confinement potential quantum well

Xinjun Ma, Boyu Xiao, Yong Sun and Jinlin Xiao

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 Corresponding author: Jinlin Xiao, xiaojlin@126.com

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Abstract: The effects of a magnetic field on the vibrational frequency, the ground state energy and the ground state binding energy of a weak-coupling polaron in asymmetrical Gaussian confinement potential quantum well (AGCPQW) are investigated by using linear combination operator and unitary transformation methods.Our calculated results show that the vibrational frequency increases with increasing cyclotron frequency of the magnetic field;meanwhile, the absolute value of the ground state energy and the ground state binding energy decrease.The vibrational frequency, the absolute value of the ground state energy and the ground state binding energy are increasing functions of the barrier height of the AGCPQW.It is shown that the barrier height of the AGCPQW and the magnetic field are important factors that influence the properties of the magnetopolaron in AGCPQW.

Key words: asymmetric confinement Gaussian potential quantum wellpolaronlinear combination operatormagnetic field



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Fig1.  Relational curves of the vibrational frequency $\lambda$ with the cyclotron frequency of the magnetic field $\omega _{\rm c}$ and the barrier height of the AGCPQW $V_0 $.

Fig2.  Relational curves of the ground state energy $E_0$ with the cyclotron frequency of the magnetic field $\omega _{\rm c}$ and the barrier height of the AGCPQW $V_0 $.

Fig3.  Relational curves of the ground state binding energy $E_{\rm b}$ with the cyclotron frequency of the magnetic field $\omega _{\rm c}$ and the barrier height of the AGCPQW $V_0$.

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    Received: 08 April 2015 Revised: Online: Published: 01 October 2015

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      Xinjun Ma, Boyu Xiao, Yong Sun, Jinlin Xiao. Effects of magnetic field on the polaron in an asymmetrical Gaussian confinement potential quantum well[J]. Journal of Semiconductors, 2015, 36(10): 102004. doi: 10.1088/1674-4926/36/10/102004 X J Ma, B Y Xiao, Y Sun, J L Xiao. Effects of magnetic field on the polaron in an asymmetrical Gaussian confinement potential quantum well[J]. J. Semicond., 2015, 36(10): 102004. doi: 10.1088/1674-4926/36/10/102004.Export: BibTex EndNote
      Citation:
      Xinjun Ma, Boyu Xiao, Yong Sun, Jinlin Xiao. Effects of magnetic field on the polaron in an asymmetrical Gaussian confinement potential quantum well[J]. Journal of Semiconductors, 2015, 36(10): 102004. doi: 10.1088/1674-4926/36/10/102004

      X J Ma, B Y Xiao, Y Sun, J L Xiao. Effects of magnetic field on the polaron in an asymmetrical Gaussian confinement potential quantum well[J]. J. Semicond., 2015, 36(10): 102004. doi: 10.1088/1674-4926/36/10/102004.
      Export: BibTex EndNote

      Effects of magnetic field on the polaron in an asymmetrical Gaussian confinement potential quantum well

      doi: 10.1088/1674-4926/36/10/102004
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      Project supported by the National Natural Science Foundation of China (Nos.11464033, 11464034).

      More Information
      • Corresponding author: xiaojlin@126.com
      • Received Date: 2015-04-08
      • Accepted Date: 2015-05-28
      • Published Date: 2015-01-25

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