PERIODIC MODULATION OF COULOMB-BLOCKADE OSCILLATIONS IN HIGH MAGNETIC-FIELDS

被引：20

作者：

HEINZEL, T ^{[1
]}

WHARAM, DA ^{[1
]}

KOTTHAUS, JP ^{[1
]}

BOHM, G ^{[1
]}

KLEIN, W ^{[1
]}

TRANKLE, G ^{[1
]}

WEIMANN, G ^{[1
]}

机构：

[1] TECH UNIV MUNICH,WALTER SCHOTTKY INST,D-85748 GARCHING,GERMANY

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.50.15113

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Coulomb-blockade oscillations in transport through a lateral quantum dot at small Landau-level filling factors are investigated. We observe both a periodic modulation of the peak conductance as well as a striking modulation of the peak separation. We show that below a Landau-level filling factor of 3 a single-particle description of these effects fails and the depopulation of the Landau levels with decreasing electron number can occur noncyclically. We interpret our measurements in terms of a recently developed phase diagram that characterizes the states of the quantum dot. © 1994 The American Physical Society.

引用

页码：15113 / 15119

页数：7

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