Structures of low-lying states of a four-electron system in a quantum dot

Abstract

The methods for few-body systems are introduced to extract features of structure of low-lying states of a four-electron dot. Similarities among the states have been found, and accordingly a number of rotational bands have been identified. Each band is characterized by a specific mode of internal oscillation. The decisive effect of symmetry has been emphasized. \textcopyright{} 1996 The American Physical Society.