Evenly curved two-dimensional electron systems in rolled-up Hall bars
Evenly curved two-dimensional electron systems in rolled-up Hall bars
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DOI：
10.1063/1.2206135
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发表时间：
2006-05-22
影响因子：
4
通讯作者：
Holz, M.
中科院分区：
文献类型：
--
作者：
Mendach, S.;Schumacher, O.;Holz, M.
我们提出了均匀弯曲的二维电子系统在霍尔杆几何。将自轧制应变层的方法扩展到脆弱的厚度调制层系统，使我们能够将完整的霍尔杆几何形状卷成微卷。这些结构代表了正弦调制磁场中输运现象研究的模型系统。通过将有限元计算与经典状态下的输运数据进行比较，说明了调制的正弦形状和调制相位的可调性。此外，我们证明了载流子密度的可调性在我们的结构中使用滚入金属门。(c) 2006年美国物理研究所。
We present evenly curved two-dimensional electron systems in Hall-bar geometry. Expanding the method of self-rolling strained layers to fragile thickness modulated layer systems enables us to roll-up complete Hall-bar geometries into microscrolls. These structures represent model systems for the investigation of transport phenomena in sinusoidally modulated magnetic fields. The sinusoidal shape of the modulation and the tunability of the modulation phase are illustrated by comparing finite element calculations with transport data in the classical regime. Furthermore, we demonstrate the tunability of the carrier density in our structures using rolled-in metal gates. (c) 2006 American Institute of Physics.