Ionisation of a quantum dot by electric fields

被引：5
|
作者：
Eminov, P. A. [1 ,2 ]
Gordeeva, S. V. [2 ]
机构：
[1] Moscow State Univ Elect & Math, Moscow 109028, Russia
[2] Moscow State Univ Instrument Engn & Informat, Moscow 107996, Russia
来源：
QUANTUM ELECTRONICS | 2012年 / 42卷 / 08期
关键词：
ionisation; quantum dot; imaginary-time method; saddle point; ELECTROMAGNETIC-WAVE; MULTIPHOTON IONIZATION; S-MATRIX; ATOMS; IONS;
D O I：
10.1070/QE2012v042n08ABEH014873
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We have derived analytical formulas for differential and total ionisation probabilities of a two-dimensional quantum dot by a constant electric field. In the adiabatic approximation, we have calculated the probability of this process in the field of a plane electromagnetic wave and in a superposition of constant and alternating electric fields. The imaginary-time method is used to obtain the momentum distribution of the ionisation probability of a bound system by an intense field generated by a superposition of parallel constant and alternating electric fields. The total probability of the process per unit time is calculated with exponential accuracy. The dependence of the results obtained on the characteristic parameters of the problem is investigated.
引用
收藏
页码：733 / 738
页数：6
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