Landau-level spectroscopy of a two-dimensional electron system by tunneling through a quantum dot

被引：51

作者：

Main, PC ^{[1
]}

Thornton, ASG ^{[1
]}

Hill, RJA ^{[1
]}

Stoddart, ST ^{[1
]}

Ihn, T ^{[1
]}

Eaves, L ^{[1
]}

Benedict, KA ^{[1
]}

Henini, M ^{[1
]}

机构：

[1] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.84.729

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A single InAs self-assembled quantum dot is incorporated in the barrier of a tunnel diode and used as a spectroscopic probe of an adjacent two-dimensional electron system from the Fermi energy to the subband edge. We obtain quantitative information about the energy dependence of the quasiparticle lifetime. For magnetic field B, applied parallel to the current, we observe peaks in the current-voltage characteristics I(V) corresponding to the formation of Landau levels. Close to filling factor v = 1 we observe directly the exchange enhancement of the Lande g factor.

引用

页码：729 / 732

页数：4

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