【摘要】 有关负施主离子Ｄ－中心的问题是国际学术界十分关注的课题．我们研究了弱磁场下二维负施主离子Ｄ－中心，用变分方法，计算了二维负施主离子角动量Ｌ＝－２自旋三重态的本征能量和束缚能，发现当无量纲的有效磁场强度γ＜０．９６时，该态是非束缚的；当γ＞０．９６时，开始变为束缚态．更多还原

【Abstract】 A good deal of attention is paid to the problem with regard to negative donor ion D - center by the international academic circles.We have investigated the two dimensional (2D) negative charged donor ion,D - center,under weak magnetic fields.Using a variational method,we have calculated the eigenenergies and the bonding energies of 2D D - centers for the spin triplet state of L=-2. It is found that,when γ<0.96, this state is a nonbound state,and when γ>0.96, the state becomes a bound state ( γ is the dimensionless magnetic field strength).更多还原