Detection of magnetic state in a nanoscale ferromagnetic ring by using ballistic semiconductor two-dimensional electron gas
Detection of magnetic state in a nanoscale ferromagnetic ring by using ballistic semiconductor two-dimensional electron gas
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DOI：
10.1063/1.2177358
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发表时间：
2006-02
影响因子：
4
通讯作者：
Masahiro Haraa;J. Shibata;T. Kimura
中科院分区：
文献类型：
--
作者：
Masahiro Haraa;J. Shibata;T. Kimura
本文提出了一种通过分析铁磁环下半导体二维电子气（2DEG）的特征响应来测量铁磁环磁化过程的方法。在铁磁环下形成2DEG微交叉结构，以检测洋葱态的成对畴壁的位置。利用半经典台球模型定量地再现了由于成对畴壁的旋转而引起的弯曲阻力的变化。
We have developed a method of measuring magnetization process in a ferromagnetic ring by analyzing a characteristic response of a semiconductor two-dimensional electron gas (2DEG) lying beneath the ring. A 2DEG microcross structure is formed underneath a ferromagnetic ring to detect the position of paired domain walls of the onion state. The variation of the bend resistance due to the rotation of the paired domain walls is quantitatively reproduced by a semiclassical billiard model.