Shell structure and electronic excitations of quantum dots in a magnetic field probed by inelastic light scattering

被引:84
作者
Lockwood, DJ
Hawrylak, P
Wang, PD
Torres, CMS
Pinczuk, A
Dennis, BS
机构
[1] UNIV NOTRE DAME,DEPT ELECT ENGN,NOTRE DAME,IN 46556
[2] UNIV GLASGOW,NANOELECTR RES CTR,GLASGOW,LANARK,SCOTLAND
[3] AT&T BELL LABS,MURRAY HILL,NJ 07974
关键词
D O I
10.1103/PhysRevLett.77.354
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Inelastic light scattering experiments on deep-etched GaAs/AlGaAs modulation doped quantum dots in a magnetic field are reported. The Raman measurements at large in-plane wave vector transfer reveal a multicomponent excitation spectrum of the many-electron quantum dots. Observed transitions split with the magnetic field. The experimental results are interpreted in terms of the calculated excitation spectrum in the Hartree approximation. The results reveal an electronic shell structure of quantum dots and a low energy excitation due to a Landau-like band crossing the Fermi level with increasing magnetic field.
引用
收藏
页码:354 / 357
页数:4
相关论文
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