CONDUCTANCE FLUCTUATIONS IN A QUANTUM-DOT IN THE TUNNELING REGIME - CROSSOVER FROM APERIODIC TO REGULAR BEHAVIOR

被引：40
作者：
MARCUS, CM
WESTERVELT, RM
HOPKINS, PF
GOSSARD, AC
机构：
[1] HARVARD UNIV,DIV APPL SCI,CAMBRIDGE,MA 02138
[2] UNIV CALIF SANTA BARBARA,DEPT MAT,SANTA BARBARA,CA 93106
来源：
SURFACE SCIENCE | 1994年 / 305卷 / 1-3期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0039-6028(94)90940-7
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We discuss magnetoconductance fluctuations in a approximately 1 mum GaAS/AlxGa1-xAs quantum dot in the shape of a chaotic stadium billiard with point contact leads. Here we emphasize measurements carried out in the tunneling regime, where each lead carries less than one fully conducting channel. We discuss various crossover phenomena as the magnetoconductance fluctuations evolve from aperiodic structure at low fields (B less than or similar to 0.5 T) into periodic, Aharonov-Bohm-like oscillations at higher fields.
引用
收藏
页码：480 / 489
页数：10
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