Electron transport in a two-dimensional electron gas with magnetic barriers
Electron transport in a two-dimensional electron gas with magnetic barriers
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DOI：
10.1103/physrevb.62.5074
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发表时间：
2000-08
影响因子：
3.7
通讯作者：
T. Vancura;T. Ihn;S. Broderick;K. Ensslin;W. Wegscheider;M. Bichler
中科院分区：
文献类型：
--
作者：
T. Vancura;T. Ihn;S. Broderick;K. Ensslin;W. Wegscheider;M. Bichler
研究了在铁磁薄膜边缘下产生磁垒时二维电子气的低温纵向电阻和霍尔电阻。一个平面内的外部磁场允许我们调整内的经典透射制度的势垒高度。提出了一个理论模型，预测的大小和形状的电阻校正的弹道情况下，存在一个单一的磁屏障。该模型不含可调参数，与实验定性一致。预测电阻修正值的大小与测量值在系数2内一致。
The low-temperature longitudinal and Hall resistances of a two-dimensional electron gas are studied in the presence of a magnetic barrier created under the edge of a thin ferromagnetic film. An in-plane external magnetic field allows us to tune the barrier height within the classically transmissive regime. A theoretical model is presented that predicts the size and shape of the resistance correction for the ballistic case in the presence of a single magnetic barrier. The model that contains no adjustable parameters is in qualitative agreement with the experiment. The size of the predicted resistance correction agrees with the measurement within a factor of 2.