In quantum dots under a strong magnetic field, all the electrons occupy only the lowest Landau level and are spin polarized. When an orbiting electron is regarded as a quasiparticle, the interaction between a pair of ...In quantum dots under a strong magnetic field, all the electrons occupy only the lowest Landau level and are spin polarized. When an orbiting electron is regarded as a quasiparticle, the interaction between a pair of quasiparticles is a short range attraction matched to a long range repulsive tail. Magic numbers of angular momentum are justthose where the quasiparticles can be arranged into compact clusters with their sizes determined by the saturation of the short range attraction.展开更多
基金Supported by the Hong Kong Croucher Foundation,and in part by the National Natural Science Foundation of China under Grant No.19875018,Guangdong Provincial Natural Science Foundation,and Guangzhou Civic Natural Science Foundation.
文摘In quantum dots under a strong magnetic field, all the electrons occupy only the lowest Landau level and are spin polarized. When an orbiting electron is regarded as a quasiparticle, the interaction between a pair of quasiparticles is a short range attraction matched to a long range repulsive tail. Magic numbers of angular momentum are justthose where the quasiparticles can be arranged into compact clusters with their sizes determined by the saturation of the short range attraction.
