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首页> 外文期刊>Physica status solidi, B. Basic research >Binding energy of an off-centre hydrogenic donor impurity in a spherical quantum dot
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Binding energy of an off-centre hydrogenic donor impurity in a spherical quantum dot

机译：球形量子点中偏心氢供体杂质的结合能

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摘要

A variational calculation is given of the binding energy of an off-centre hydrogenic donor impurity placed in a spherical quantum dot. The study is restricted to the ground state binding energy in the quantum dot. The cases of both infinite and finite confining potentials are considered. The variation of the binding energy as a function of the dot radius and as a function of the impurity position has been investigated. In the case of high finite confining potentials, the initial deviation of the binding energy from the result of infinite potential has been derived. The critical impurity location at which the deviation in the binding energy due to any finite confining potential changes its sign has been determined. The maximum binding energy and the dot radius at which it occurs have further been calculated for any confining potential or any impurity location.
机译：对放置在球形量子点中的偏心氢供体杂质的结合能进行了变分计算。该研究仅限于量子点中的基态结合能。考虑了无限和有限局限势的情况。已经研究了结合能随点半径和杂质位置的变化。在有限的高限制电位的情况下，已得出结合能与无限电位的结果的初始偏差。已经确定了关键杂质位置，在该位置上，由于任何有限的限制电势，结合能的偏差都会改变其符号。对于任何限制电势或任何杂质位置，都已进一步计算了最大结合能和发生结合点的点半径。

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