Internal excited state of impurity polaron in quantum rods

Abstract

Abstract:

The Hamiltonian of a quantum rod with an ellipsoidal boundary is given after a coordinate transformation , which changes the ellipsoidal boundary into a spherical one . We then study the first excited state energy , the excitation energy and the transition frequency between the first excited state and the ground state of the weak-coupled impurity polaron in it . The effects of the transverse and longitudinal effective confinement lengths , the Coulomb bound potential and the ellipsoid aspect ratio are taken into consideration by using linear combination operator and unitary transformation methods . It is found that these quantities are increasing functions of the Coulomb bound potential ,whereas are decreasing functions of the aspect ratio and the effective confinement lengths . These can be attributed to the interesting quantum size confining effect .

Key words: optoelectroics, quantum rods, impurity polaron, linear combination operator , aspect ratio

CLC Number:

O461

BAI Xu-fang，WANG Dong-min，XIAO Jing-lin. Internal excited state of impurity polaron in quantum rods[J]. J4, 2012, 29(3): 368-373.

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