| 1. | The generic methods for the calculation about the binding energy of d - centers are variational and diffusion quantum monte carlo methods 在计算d ~ -中心的束缚能时,理论工作者们一般采用的是变分法或离散量子蒙特卡罗方法计算d ~ -中心的基态能。 |
| 2. | The binding energies and the ground state energies of hydrogen impurity in a lens - shaped quantum dot ( gaas / inl - xgaxas ) under vertical magnetic field using effective mass approximation and variation method have been discussed 利用有效质量近似、变分法,研究了垂直磁场下透镜型量子点( gaas / in1 - xgaxas )掺入类氢杂质后基态能和结合能。 |
| 3. | The method and some simple and important results are presented . in the second chapter , we study the ground state energy gap and the spin - peierls phase transition in the quasi one - dimensional spin = l / 2 dimerized anti - ferromagnetic single chain 第二章中,我们研究准一维自旋s = 1 / 2的二聚化反铁磁单链的基态能隙和低温下的spin - peierls相变。 |
| 4. | ( 2 ) for a lens - shaped quantum dot , due to the asymmetry of the bound potential of in - plane and perpendicular to the plane , the electric ground state energies are related not only with the deviation distance but also with the deviation direction ( 2 )对于透镜型量子点,由于水平方向和垂直方向束缚势不对称,电子基态能不仅与杂质的偏离距离有关,还与杂质偏离方向有关。 |
| 5. | Firstly the binding energies and the ground state energies of hydrogen impurity in a lens - shaped quantum dot ( gaas / inl - xgaxas ) under vertical magnetic field will be displayed . then how to use the nuclear spin as the quantum bit will be given 首先研究了垂直磁场下透镜型量子点( gaas / in1 - xgaxas )掺入类氢杂质后基态能和结合能,然后讨论了如何利用量子点中杂质核自旋构造量子位。 |
| 6. | From discussing and analyzing the calculated outcome we obtain the conclusions as follows : 1 . for the energies of the single electron in a square quantum wire with finite barriers , the former wavefunctions [ 12 - 14 ] are only available to the wide wires . for the oscillator strength of the single electron in a square quantum wire with finite barriers , the former wavefunctions are not appropriate 通过对计算结果的讨论和分析,得到以下结论: 1 .对有限深方形量子线中单电子的基态能和第一激发态能,前人’ 2一’ ‘ ’所取波函数只适合计算宽阱时的情况,对有限深方形量子线中单 |
| 7. | It turns out that : ( 1 ) without the magnetic field for a spherical quantum dot , the ground state energy is the same , and has only relations with the distance of the impurity deviation . after applied the vertical magnetic field , the effects of the ground state energies on the deviation of in - plane or perpendicular to the plane are very small , while the effects on the deviation distance are great , the larger the distance , the more ground state energies will be 我们发现: ( 1 )当球型量子点没有加垂直磁场的时候,基态能仅与杂质的偏离距离有关,当加上垂直磁场后,杂质水平和垂直偏离相同距离后,基态能差别不大,当偏离距离增加时,基态能增加。 |
| 8. | In this paper , the wavefunction is expanded in terms of the two - dimensional harmonic oscillator eigenfunction and the mismatch of the effective mass is considered . we calculate the energy of the ground state , the energy of the first excited state and the oscillator strength of the single electron in a square quantum wire with finite barriers 本文选取了以二维谐振子本征函数为基展开的波函数,并且考虑了有效质量的失配性,计算了有限深方形量子线中单电子的基态能,激发态能和振子强度。 |
| 9. | This paper has studied the wavefunction expanded in terms of the two - dimensional harmonic oscillator eigenfunction through calculating the energy of the ground state , the energy of the first excited state and the oscillator strength in a square wire with finite barriers and studied its application in these fields . the most remarkable advantage of this wavefunction is that it can satisfy the continuity of the function and of its derivative divided by the band - mass and it is convenient to calculate some physical magnitudes because the number of the terms is small 本文通过计算有限深方形量子线中单电子的基态能、第一激发态能和振子强度研究了以二维谐振子本征函数为基展开的波函数以及它在这些问题中的应用,此波函数的显著优点是:在边界处满足波函数的连续性条件和粒子流的守恒条件,并且展开项数少,计算方便。 |