Effect of Pressure on the Spin-Dependence of Electrical Resistivity in Fe/Cr Magnetic Multilayers
Effect of Pressure on the Spin-Dependence of Electrical Resistivity in Fe/Cr Magnetic Multilayers
复制标题
压力对 Fe/Cr 磁性多层电阻率自旋依赖性的影响
DOI：
10.1143/jpsj.79.054711
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发表时间：
2010
影响因子：
1.7
通讯作者：
K. Takanashi
中科院分区：
文献类型：
--
作者：
G. Oomi;K. Suenaga;S. Higashihara;K. Saito;S. Mitani;K. Takanashi
在高压和磁场下测量了Fe/Cr磁性多层膜的电导率。通过施加磁场，电阻率显示出大的下降，表明巨磁阻（GMR）。随着压力的增加，GMR减小，但饱和场增加。提取了自旋与Fe层磁化方向平行（ρ +）和反平行（ρ-）的导电电子散射引起的电导率的自旋依赖性。ρ +的压力依赖性大于ρ-。根据理论模型讨论了ρ~+和ρ~-的压力依赖性的来源，认为ρ~+和ρ~-的大压力系数主要是由于界面随机交换势的变化。施加压力会导致电阻率随温度变化的极小值。在40 K以下，ρ +随温度的升高而减小，ρ-随温度的升高而增大。结果表明，该方法具有较好的应用前景。
The electrical resistivities of Fe/Cr magnetic multilayers have been measured at a high pressure and magnetic field. The electrical resistivity shows a large decrease by applying a magnetic field, indicating giant magnetoresistance (GMR). GMR decreases but the saturation field increases with increasing pressure. The spin-dependence of electrical resistivities due to the scattering of conduction electrons with spins parallel (ρ + ) and antiparallel (ρ - ) to the Fe layer magnetization are extracted. The pressure dependence of ρ + is greater than that of ρ - . The origins of the pressure dependence of ρ + and ρ - are discussed on the basis of theoretical model, and the large pressure coefficients for ρ + and ρ - are suggested to be mainly due to a change in the random exchange potential at interfaces. A small minimum in the temperature-dependence of resistivity is induced by applying pressure. ρ + decreases but ρ - increases with increasing temperature up to 40 K. The anomalous temperature-dependence of res...
DOI：
--
发表时间：
2018
期刊：
影响因子：
--
作者：
多田靖啓
通讯作者：
多田靖啓
DOI：
10.1088/0953-8984/3/46/008
发表时间：
1991-11
期刊：
Journal of Physics: Condensed Matter
影响因子：
--
作者：
H. Sato;I. Sakamoto;C. Fierz
通讯作者：
H. Sato;I. Sakamoto;C. Fierz