Shell structure of a circular quantum dot in weak magnetic fields

被引：39
|
作者：
Reimann, SM
Persson, M
Lindelof, PE
Brack, M
机构：
[1] CHALMERS UNIV TECHNOL, DEPT PHYS, S-41296 GOTHENBURG, SWEDEN
[2] UNIV COPENHAGEN, NIELS BOHR INST, DK-2100 COPENHAGEN, DENMARK
来源：
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1996年 / 101卷 / 03期
关键词：
D O I：
10.1007/s002570050223
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The conductance of a circular quantum dot in a two-dimensional electron gas of a GaAlAs/GaAs heterostructure has been measured. Conductance oscillations as functions both of the magnetic field B and of the size of a dot confining about 1000 electrons are related to the formation of electronic shell structure. Modeling the dot by a circular billiard, we interpret the results semiclassically in terms of periodic orbit theory, providing a simple explanation of the B-periodic oscillations. A comparison to a harmonic confinement suitable for smaller quantum dots is given.
引用
收藏
页码：377 / 385
页数：9
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