CONDUCTANCE OSCILLATIONS RELATED TO THE DENSITY-OF-STATES OF A CIRCULAR QUANTUM-DOT IN WEAK MAGNETIC-FIELDS

被引：7

作者：

PERSSON, M

LINDELOF, PE

VONSYDOW, B

PETTERSSON, J

KRISTENSEN, A

机构：

[1] CHALMERS UNIV TECHNOL,DEPT APPL PHYS,S-41296 GOTHENBURG,SWEDEN

[2] UNIV COPENHAGEN,NIELS BOHR INST,DK-2100 COPENHAGEN,DENMARK

[3] GOTHENBURG UNIV,S-41296 GOTHENBURG,SWEDEN

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1995年 / 7卷 / 19期

关键词：

D O I：

10.1088/0953-8984/7/19/007

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The conductance of a quantum dot has been measured as a function of the magnetic field and the size of the dot. The dot was formed by electrostatic depletion in a GaAs/GaAlAs heterostructure and contained approximately 1700 electrons. Measured conductance variations agree with calculated values of a simplified model, where electrons tunnel through the energy levels of an isolated perfectly circular dot. The maximum peak amplitudes in the Fourier power spectra of the magnetoconductance decrease stepwise, with steps at multiples of the Aharonov-Bohm frequency f = eA/h, where A is the dot area.

引用

页码：3733 / 3740

页数：8

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