Edge-state transport in finite antidot lattices.
Edge-state transport in finite antidot lattices.
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有限解点晶格中的边缘态输运。
DOI：
10.1103/physrevb.52.14699
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Klein
中科院分区：
文献类型：
--
作者：
Schuster;Ensslin;Dolgopolov;Kotthaus;Böhm;Klein
研究了有限周期反点超晶格中的电子输运。在低载流子密度和高磁场下，电子在磁边缘通道中在整个系统上相干地相位行进，并且在反点电势景观的几何形状的影响下相互干扰。磁电阻显示出明显的Aharonov-Bohm型振荡，这种振荡是由沿着反点周围形成的束缚态运动的电子引起的。振荡的特征周期由反点的周长所限定的面积给出。
We study electron transport in an antidot superlattice with a finite number of periods. At low carrier densities and high magnetic fields the electrons travel phase coherently over the entire system in magnetic edge channels and interfere with each other under the influence of the geometry of the antidot potential landscape. The magnetoresistance displays pronounced Aharonov-Bohm-type oscillations arising from electrons that travel along the bound states that form around the antidots. The characteristic period of the oscillations is given by the area defined by the circumference of the antidots.