Effect of magnetic interphase boundaries on the electrical resistivity in metallic metamagnets
Effect of magnetic interphase boundaries on the electrical resistivity in metallic metamagnets
复制标题
磁相间边界对金属变磁体电阻率的影响
DOI：
10.1016/0925-8388(93)90469-4
复制
发表时间：
1993
影响因子：
6.2
通讯作者：
E. Sinitsyn
中科院分区：
文献类型：
--
作者：
N. Baranov;P. Markin;A. I. Kozlov;E. Sinitsyn
研究了ErGa2、Tb3Co和ndcu2化合物单晶在场致自旋翻转跃迁区域的磁阻。在具有不同磁性结构的磁相共存的中间态，电阻率异常增大。提出了一个解释这种异常的理论模型。该模型中的电阻率峰值与不同磁结构相间边界势垒处的s电子反射有关。这种效应是超导体中所谓的安德烈夫反射的磁性类比。
The magnetoresistance of single crystals of ErGa2, Tb3Co and NdCu2compounds has been studied in the regions of the field-induced spin-flip transitions. An anomalous increase was found in the electrical resistivity in the intermediate state where the magnetic phases with the different magnetic structures coexist. A theoretical model to explain this anomaly is proposed. The peaks of the electrical resistivity in this model are connected with the s electron reflection from the potential barrier at the interphase boundary separating the phases with different magnetic structures. This effect is the magnetic analogy of so-called Andreev's reflection in superconductors.