Bipolaron in different configuration of quantum confinement  

作　　者：阮永红 陈庆虎 焦正宽 

机构地区：[1]DepartmentofPhysics,ZhejiangUniversity,Hangzhou310027,China

出　　处：《Journal of Zhejiang University Science》2004年第7期873-877,共5页浙江大学学报（自然科学英文版）

摘　　要：The authors used Landau-Pekar variational method to investigate a strong-coupling singlet optical bipolaron in different configuration of quantum confinement. Numerical and analytical results showed that when configuration changes from quantum dot and wire to well, confinement shows different effect on the formation of a bipolaron. In contrast to a bipolaron in a quantum dot or wire, the binding energy of a bipolaron in a quantum well increases with increasing con-finement, indicating that confinement favors bipolaron formation in a quantum well.The authors used Landau-Pekar variational method to investigate a strong-coupling singlet optical bipolaron in different configuration of quantum confinement. Numerical and analytical results showed that when configuration changes from quantum dot and wire to well, confinement shows different effect on the formation of a bipolaron. In contrast to a bipolaron in a quantum dot or wire, the binding energy of a bipolaron in a quantum well increases with increasing con- finement, indicating that confinement favors bipolaron formation in a quantum well.

关 键 词：BIPOLARON Quantum confinement Quantum wire Quantum well Quantum dot Binding energy 

分 类 号：O413[理学—理论物理]