Magnetic field effect on state energies and transition frequency of a strong-coupling polaron in an anisotropic quantum dot

Pramana

Wei Xiao²  Jing-Lin Xiao2¹ 

[1] the electron–phonon coupling strength.$$;the magnetic field and$$

关键词: Anisotropic quantum dots;    polaron;    variational method of the Pekar-type;    magnetic field.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

By employing a variational method of the Pekar-type, which has different variational parameters in the 𝑥–𝑦 plane and the $z$-direction, we study the ground and the first excited state energies and transition frequency between the ground and the first excited states of a strong-coupling polaron in an anisotropic quantum dot (AQD) under an applied magnetic field along the $z$-direction. The effects of the magnetic field and the electron–phonon coupling strength are taken into account. It is found that the ground and the first excited state energies and the transition frequency are increasing functions of the external applied magnetic field. The ground state and the first excited state energies are decreasing functions, whereas transition frequency is an increasing function of the electron–phonon coupling strength. We find two ways of tuning the state energies and the transition frequency: by adjustingthe magnetic field and

【 授权许可】

Unknown