The states of a weakly coupled 3-quantum-dot system with an external charged impurity located on the z-axis are studied in a magnetic field.The evolutions of the true ground state with the magnetic field B are botaine...The states of a weakly coupled 3-quantum-dot system with an external charged impurity located on the z-axis are studied in a magnetic field.The evolutions of the true ground state with the magnetic field B are botained for various impurity cases.It is found that the negative charge impurity would promote the phase transition of the true ground state.展开更多
文摘The states of a weakly coupled 3-quantum-dot system with an external charged impurity located on the z-axis are studied in a magnetic field.The evolutions of the true ground state with the magnetic field B are botained for various impurity cases.It is found that the negative charge impurity would promote the phase transition of the true ground state.