摘要
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.
作者
RUAN Wen-Ying
LI Quan
CHEN Guo-Sen
HE Hao-Pei
PAN Yu-Bin
阮文英;李泉;陈国森;何浩培;潘欲滨(Department of Physics,South China University of Technology,Guangzhou 510641;Department of Physics and Materials Science;Department of Electronic Engineering,City University of Hong Kong,Hong Kong)
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.
