ERA NanoSci - Nanowire based Microwave Emitters for Use in Monolithic Microwave Integrated Circuits (NanoWave)

科学目标是了解自旋极化诱导微波产生过程中纳米接触阵列的相相干性和锁相机制。我们将重点讨论微波振荡器及其与单个纳米触点之间的尺寸和距离的关系。纳米触点应由磁性纳米线阵列和交叉电极的交叉形成。我们将研究来自这种阵列的微波发射相干耦合的影响，并确定功率增强作为邻近纳米线之间或沿同一纳米线定位的磁触点之间接近的因素。项目创新是利用沉积技术自组装纳米触点阵列，能够形成纳米线的平面阵列，以及磁性纳米触点的几何形状，允许在两个铁磁层的磁矩之间的大角度进行实验。

The scientific objective is to develop an understanding of the phase coherency and the mechanism of phase locking in arrays of nano-contacts in the process of spin polarised induced generation of microwaves by spin torque.We shall focus on the microwave oscillator and its dependency on the size and separation between individual nanocontacts.The nanocontacts shall be formed by intersection of an array of magnetic nanowires and cross-electrodes.We shall investigate the effect of the coherent coupling of microwave emissions from such arrays and determine the power enhancement as a factor of proximity between the neighbouring nanowires or between magnetic contacts positioned along the same nanowire. Project innovations are the self-assembly of arrays of nanocontacts using a deposition technique capable of forming planar arrays of nanowires and the geometry of magnetic nanocontacts that allows for experiments with large angle between magnetic moments of the two ferromagnetic layers.