INFLUENCE OF SHAPE ON ELECTRON-TRANSPORT IN BALLISTIC QUANTUM DOTS

被引：55
作者：
BERRY, MJ
KATINE, JA
WESTERVELT, RM
GOSSARD, AC
机构：
[1] HARVARD UNIV,DEPT PHYS,CAMBRIDGE,MA 02138
[2] UNIV CALIF SANTA BARBARA,DEPT MAT,SANTA BARBARA,CA 93110
来源：
PHYSICAL REVIEW B | 1994年 / 50卷 / 23期
关键词：
D O I：
10.1103/PhysRevB.50.17721
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have investigated the low-temperature (T=0.43-4.25 K) magnetotransport of quantum dots fabricated in the shape of an open circle and a circle having a central bar. The characteristic magnetic fields for both coherent backscattering and conductance fluctuations are strongly shape dependent: both are larger by a factor 3 in the device with the central bar. Comparison of large and small devices of nominally identical shape shows that characteristic trajectory areas are proportional to the device area. © 1994 The American Physical Society.
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页码：17721 / 17724
页数：4
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