Preparation of curved two-dimensional electron systems in InGaAs/GaAs-microtubes

被引：46

作者：

Mendach, S ^{[1
]}

Schumacher, O ^{[1
]}

Heyn, C ^{[1
]}

Schnüll, S ^{[1
]}

Welsch, H ^{[1
]}

Hansen, W ^{[1
]}

机构：

[1] Univ Hamburg, Inst Angew Phys, D-20355 Hamburg, Germany

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2004年 / 23卷 / 3-4期

关键词：

nanotubes; curved two-dimensional electron systems; modulated magnetic field;

D O I：

10.1016/j.physe.2004.01.018

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We present a preparation method to realise transport measurements on evenly curved two-dimensional electron systems (2DESs). By combining the method of self-rolling strained double layers with a special lithographic procedure we are able to roll-in and contact AlGaAs/GaAs/AlGaAs quantum well structures into tubes or curved lamellas. Applying a magnetic field to such structures results in a strong modulation with changing sign of the magnetic field components perpendicular to the curved 2DES plane. Our preparation method allows transport measurements along or perpendicular to this modulation. We present and discuss our first magneto-tran sport measurements on such rolled 2DESs. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：274 / 279

页数：6