Weakly Coupled Three-Layer Quantum Dot with a Charged Impurity in Magnetic Field

• 作 者: YANG Jie ZHANG Zhan-Jun
• 机 构: Department of Modern Physics,Department of Physics,Wuhan Institute of Physics and Mathematics
• 出 处: 理论物理通讯
• 发表日期: 2004年期
• 关键词: quantum dot charged impurity true ground state phase transition
• 基金项目: 国家自然科学基金

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 obtained for various impurity cases. It is found that the negative charge impurity would promote the phase transition of the true ground state.