Magnetic switching of the superconducting transition temperature in layered ferromagnetic/superconducting hybrids: Spin switch versus stray field effects
Magnetic switching of the superconducting transition temperature in layered ferromagnetic/superconducting hybrids: Spin switch versus stray field effects
复制标题
层状铁磁/超导混合体中超导转变温度的磁切换：自旋切换与杂散场效应
DOI：
10.1103/physrevb.74.094504
复制
发表时间：
2006
影响因子：
3.7
通讯作者：
P. Ziemann
中科院分区：
文献类型：
--
作者：
R. Steiner;P. Ziemann
实验分析了[铁磁（FM）/超导（SC）/铁磁（FM）]三层膜的电阻和磁化特性，并将其与超导转变温度联系起来。与邻近效应理论所预期的相反，在两个相邻FM层的磁化的反平行相对取向的情况下，表现出最小值。虽然这一结果与自旋不平衡理论的预测相一致，但对交换偏置系统的额外实验揭示了强烈的变化，即使FM层的固定相对磁化方向指向杂散场，而不是磁化方向，也是导致自旋偏移的原因。这一想法是证实了额外的测量和双层，这清楚地显示与特定的磁畴配置的FM层的磁饱和状态的最大值的变化。互补的微磁模拟，也提供了杂散场的大小，支持通过控制和切换域配置的影响的图片。
The resistance and magnetization behavior of [ferromagnetic (FM)/superconducting (SC)/ferromagnetic (FM)] trilayers of the typewas experimentally analyzed and related to their superconducting transition temperature. As opposed to what is expected by proximity effect theory,exhibited a minimum in case of an antiparallel relative orientation of the magnetization of the two sandwiching FM layers. Though this result is consistent with the predictions of spin-imbalance theory, additional experiments on exchange-biasedsystems revealed strongchanges, even for a fixed relative magnetization orientation of the FM layers pointing to stray fields, rather than magnetization orientations, as causing the observedshifts. This idea is corroborated by additional measurements onandbilayers, which clearly showchanges related to specific magnetic domain configurations with amaximum in the magnetically saturated state of the FM layer. Complementary micromagnetic simulations, delivering also the magnitude of stray fields, support the picture of influencingby controlling and switching domain configurations.