Conductance fluctuations in a quantum wire with a non-uniform scattering potential

被引：0

作者：

Horsell, D. W. ^{[1
]}

Galaktionov, E. A. ^{[1
]}

Savchenko, A. K. ^{[1
]}

Kretinin, A. V. ^{[1
]}

Ghosh, A. ^{[1
]}

Beere, H. E. ^{[1
]}

Ritchie, D. A. ^{[1
]}

机构：

[1] Univ Exeter, Sch Phys, Stocker Rd, Exeter EX4 4QL, Devon, England

来源：

PHYSICS OF SEMICONDUCTORS, PTS A AND B | 2007年 / 893卷

关键词：

conductance fluctuations; scattering potential; quantum wire; quantum Hall effect;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We study fluctuations in the conductance of a narrow GaAs/AlGaAs quantum wire. In strong magnetic fields we show that these fluctuations originate from a complex mixture of transport processes. Here back-scattering of electrons is determined by the position in energy of the bulk Landau level. We experimentally resolve a diffusion-tunnelling transition as the Fermi level is moved between integer filling factors.

引用

页码：741 / +

页数：2

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