Dynamics of the far-infrared photoresponse in quantum Hall systems
Dynamics of the far-infrared photoresponse in quantum Hall systems
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量子霍尔系统中远红外光响应的动力学
DOI：
10.1103/physrevb.66.085308
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发表时间：
2002
影响因子：
3.7
通讯作者：
K. Eberl
中科院分区：
文献类型：
--
作者：
N. G. Kalugin;Y. Vasilyev;S. Suchalkin;G. Nachtwei;B. E. Sağol;K. Eberl
研究了量子霍尔（QH）体系中二维电子系统的远红外光响应随时间的演化。我们已经确定了不同的贡献，通过使用不同的样品的几何形状，并通过改变磁场的方向的光响应。在一般情况下，我们已经发现了一个快速的响应（微秒）相关的光致霍尔电流，和更长的响应时间（高达几百毫秒）相关的光致纵向电阻。这两种类型的响应都存在于绑定到QH平台的侧翼的测辐射热响应中，以及绑定到探测辐射的光子能量的回旋共振信号中。我们给我们的结果的基础上的杂质诱导的潜力本地化的激发载流子的定性解释。
We have studied the time evolution of the far-infrared photoresponse of two-dimensional electron systems in the quantum Hall (QH) regime. We have identified different contributions to the photoresponse by using different sample geometries and by changing the direction of the magnetic field. In general, we have found a fast response (microseconds) related to photoinduced Hall currents, and longer response times (up to some hundreds of milliseconds) related to the photoinduced longitudinal resistance. Both types of the response are present in the bolometric response bound to the flanks of the QH plateau, and in the cyclotron resonance signal bound to the photon energy of the probe radiation. We give a qualitative explanation of our results on the basis of impurity-induced potentials for the localization of excited carriers.
高灵敏度量子霍尔远红外光电探测器的性能
DOI：
--
发表时间：
2002
期刊：
Applied Physics Letters 80
影响因子：
--
作者：
Astafier;S.Kamiyama;Y.Kawano;Y.Kawaguchi
通讯作者：
Y.Kawaguchi